Prifysgol Bangor
- 2013
The reception history and interpretation of the new testament portrayals of Joseph the Carpenter in nativity and infancy portrayals in early christian and early medieval narratives and art from the second century to the ninth century CE
Jacobs, P. (Awdur), Thomas, C. (Goruchwylydd), 18 Tach 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Evaluating the incredible years baby programme in Wales
Jones, C. H. (Awdur), Hutchings, J. (Goruchwylydd) & Erjavec, M. (Goruchwylydd), 12 Tach 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
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Transcendent Experience, Process, and Praxis Within the ‘Transcendence Movement’
Beasley, K. (Awdur), Huskinson, L. (Goruchwylydd), 11 Tach 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Carbon storage in Orchards
Anthony, R. (Awdur), McDonald, M. (Goruchwylydd), 4 Tach 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
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Essays on bank capital requirements, systematic risk, and financing bank M&A's in SE Asia
Chen, G. (Awdur), Tach 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Statistical learning of orthographic patterns in typically developing and dyslexic populations
Samara, A. (Awdur), Caravolas, M. (Goruchwylydd), 31 Hyd 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Spirit Christology in the christian tradition : from the patristic period to the rise of Pentecostalism in the twentieth-century
Bryant, H. (Awdur), Thomas, C. (Goruchwylydd), 21 Hyd 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Application of the capability approach to health economics research involving informal carers of people with dementia
Jones, C. (Awdur), Edwards, R. (Goruchwylydd) & Hounsome, B. (Goruchwylydd), 18 Hyd 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Identification and functional characterisation of germ line genes in human cancer cells
Aldeailej, I. (Awdur), Mcfarlane, R. (Goruchwylydd), 15 Hyd 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
'I was in the spirit on the Lord's day' : a pentecostal engagement with worship in the apocalypse
Archer, M. L. (Awdur), Thomas, J. C. (Goruchwylydd), 1 Hyd 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Rethinking and reconfiguring the anthropomorphic concept of corporate personality : some suggestions for personality needs in the light of corporate development in public companies with a particular focus on the United Arab Emirates
Alremeithi, S. F. (Awdur), Hyd 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Elucidating the impact of novel A1 and A2 Phytophthora infestans strains on existing Irish blight populations
Nyongesa, M. (Awdur), Wright, D. (Goruchwylydd), Mullins, E. (Goruchwylydd) & Shaw, D. (Goruchwylydd), 29 Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Female Suicide and Attempted Suicide in the Kurdistan Region of Iraq: A Study of Social Factors
Rasool, I. (Awdur), Davies, H. (Goruchwylydd), 23 Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Links between parental affect, cognitions, parenting, and child outcomes
Simcock, N. (Awdur), 20 Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Essays in Islamic Finance
Osman Salleh, M. (Awdur), Jaafar, A. (Goruchwylydd), 13 Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Words and bilingualism : neural and behavioural correlates of crosslinguistic influence in category structure
Vinas-Guasch, N. (Awdur), Gathercole, V. (Goruchwylydd), 12 Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The role of vision in the preparation and execution of multiple target movements
Sarteep, S. (Awdur), Lawrence, G. (Goruchwylydd), 11 Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The benefits of errorless learning in mild cognitive impairment
Roberts, J. (Awdur), 9 Medi 2013Traethawd ymchwil myfyriwr: Doethuriaethau Proffesiynol
Improving the physical health of adults with intellectual disabilities who live in residential settings
Christian-Jones, C. (Awdur), Hastings, R. (Goruchwylydd) & Hughes, C. (Goruchwylydd), 4 Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
A Kindred Spirit in the Shadows: Jung's unfounded rejection of Kierkegaard
Cook, A. (Awdur), Huskinson, L. (Goruchwylydd), Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Development of a method for detecting TB-antibodies in patient serum
Saleh, A. D. (Awdur), Baird, M. (Goruchwylydd) & Al-Dulayymi, J. (Goruchwylydd), Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Modelling and forecasting pharmaceutical life cycles
Buxton, S. L. (Awdur), Nikolopoulos, K. (Goruchwylydd), Medi 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Socioeconomic and ecological implications of special management areas (SMAs) regime in the Kingdom of Tonga
Malimali, S. (Awdur), Kaiser, M. (Goruchwylydd), 28 Awst 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Advancing mitogenomics : a case study in the Araneae
Briscoe, A. (Awdur), Creer, S. (Goruchwylydd), 22 Awst 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Facilitating integrative agreements through fostering trust in negotiations between labour and management
Bougioukos, V. (Awdur), Nikolopoulos, K. (Goruchwylydd), 22 Awst 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Explorative coastal oceanographic visual analytics : oceans of data
George, R. (Awdur), Roberts, J. (Goruchwylydd), 1 Awst 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The effect of peatland rewetting on gaseous and fluvial carbon losses from a Welsh blanket bog
Peacock, M. (Awdur), Freeman, C. (Goruchwylydd), 1 Awst 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Exploring the possible negative effects of self-efficacy upon performance
Fakehy, M. (Awdur), Beattie, S. (Goruchwylydd), 29 Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Optimal operating conditions and security considerations for optical chaos communications
Priyadarshi, S. (Awdur), Shore, A. (Goruchwylydd), 29 Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Anaerobic digestion : its potential to improve the economic and environmental performance of organic farming systems
Walsh, J. (Awdur), Edwards-Jones, G. (Goruchwylydd), 27 Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Exploring decision making in intellectual disability nursing: provider and user perspectives
Williams, R. W. (Awdur), Irvine, F. (Goruchwylydd), 25 Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The diocese of Lagos west of the anglican communion, Church of Nigeria as agent of social and political change in the society
Adekoya, R. (Awdur), Dyer, A. (Goruchwylydd), 22 Gorff 2013Traethawd ymchwil myfyriwr: Doethuriaethau Proffesiynol
An evaluation of marriage-divorce-remarriage issues among Ghanaian Christian migrants as blamed on the radical impact of western and African cultural clashes in the UK
Okofo-Boansi, E. (Awdur), Routledge, R. (Goruchwylydd), 16 Gorff 2013Traethawd ymchwil myfyriwr: Doethuriaethau Proffesiynol
Linguistic relativity electrified :|event-related potentials investigation of the way in which language affects cognition
Boutonnet, B. (Awdur), Thierry, G. (Goruchwylydd), 16 Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Use of novel chitosan derivatives for the control of food-borne pathogens
Lahmer, R. (Awdur), Jones, D. (Goruchwylydd), 9 Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Identification and analysis of DNA repair pathways that contribute to the survival of cells after nucleoside analogue treatment in Schizossacharomyces pombe
Gasasira Uwamahoro, M.-F. (Awdur), Hartsuiker, E. (Goruchwylydd), 5 Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
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Overgeneral autobiographical memory and experiential avoidance in post-traumatic stress disorder and depression
Stewart, R. (Awdur), 1 Gorff 2013Traethawd ymchwil myfyriwr: Doethuriaethau Proffesiynol
'Not from a book' The acquisition of knowledge and its use in practice by social workers, with particular regard to alcohol.
Livingston, W. (Awdur), Davis, H. (Goruchwylydd), Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The development of a novel sensor for the detection of TB
Pitts, M. (Awdur), Baird, M. (Goruchwylydd) & Gwenin, C. (Goruchwylydd), Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The impact of sovereign rating actions on banks' ratings and share prices in developed and emerging countries
Williams, G. (Awdur), Ap Gwilym, O. (Goruchwylydd), Gorff 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Patrymau defnydd iaith disgyblion cyfnod allweddol 2 a chyfnod allweddol 3
Hughes, B. (Awdur), Wiliams, G. (Goruchwylydd), 30 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The functional characterisation of leukaemia-associated protein TRAX
Almobadel, N. (Awdur), Mcfarlane, R. (Goruchwylydd), 26 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Polarisation properties of externally driven vertical cavity surface emitting lasers
Qader, A. (Awdur), Shore, A. (Goruchwylydd), 25 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Emotion regulation after acquired brain injury
Salas, C. (Awdur), Turnbull, O. (Goruchwylydd), 14 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Optimising patient function following elective total hip replacement surgery
Okoro, T. (Awdur), Lemmey, A. (Goruchwylydd) & Maddison, P. (Goruchwylydd), 13 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Cross-linguistic treatment generalisation in Welsh-English bilingual aphasia
Roberts, J. R. (Awdur), Tainturier, M.-J. (Goruchwylydd), 7 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Risk factors for offending behaviour in adults with an intellectual disability
Lofthouse, R. (Awdur), Hastings, R. (Goruchwylydd), 6 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
From history to heritage : using a company's past to guide its future
Smith, P. (Awdur), Pierce, S. (Goruchwylydd), 4 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Combining the use of accelerometry and GPS to measure free-flight performance in homing pigeons (Columbia livia)
Tyson, E. (Awdur), Whiteley, N. (Goruchwylydd), 1 Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Stony Cross : a novel and critical commentary
McNay, M. (Awdur), Harper, G. (Goruchwylydd), Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Structural and mechanistic studies of catalysts
Bennett, E. L. (Awdur), Meh 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Early development of text writing in two contrasting orthographies: English and Spanish
Salas, N. (Awdur), Caravolas, M. (Goruchwylydd), 31 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Effectiveness of halophytic plants in the treatment of marine aquaculture wastewater
Quinta, R. (Awdur), Le Vay, L. (Goruchwylydd), 31 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Thermoregulation and mucosal immunity : the effects of environmental extremes
Brierley, J. (Awdur), Oliver, S. (Goruchwylydd), 30 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Executive functioning in early stage Parkinson's disease
Kudlicka, A. (Awdur), Clare, L. (Goruchwylydd), 29 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The role of verbal cues in task-goal maintenance
Kirkham, A. J. (Awdur), 29 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Use of woodchip for agricultural livestock bedding
Paul, R. M. (Awdur) & Paul, R. (Awdur), Jones, D. (Goruchwylydd), 27 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Transformational leadership in higher education lecturing
Mawn, L. (Awdur), Callow, N. (Goruchwylydd) & Hardy, J. (Goruchwylydd), 26 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Cardio-respiratory fitness, obesity and traditional cardiovascular disease risk factors in patients with rheumatoid arthritis
Cooney, J. (Awdur), Thom, J. (Goruchwylydd) & Moore, J. (Goruchwylydd), 24 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Exercise As Adjunctive Therapy In Chronic Kidney Disease
Kirkman, D. (Awdur), Macdonald, J. (Goruchwylydd), 22 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Facilitation in perceptual and conceptual networks and rapid response learning: Two types of memory for priming in person recognition
Valt, C. (Awdur), Boehm, S. (Goruchwylydd), 13 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
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Organic electronic devices : advanced patterning and fabrication approaches
Ashall, D. (Awdur), Mabrook, M. (Goruchwylydd), 3 Mai 2013Traethawd ymchwil myfyriwr: Meistr mewn Athroniaeth
The characterisation of dissolved organic carbon and its influence on tri-halomethane formation potential
Hughes, D. (Awdur), Freeman, C. (Goruchwylydd) & Holliman, P. (Goruchwylydd), 1 Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Temporal Variability of Gait in High Functioning Autism: A Potential Diagnostic Tool
Forster, K. (Awdur), Wimpory, D. (Goruchwylydd), Mai 2013Traethawd ymchwil myfyriwr: Graddau Meistr trwy Ymchwil
The Development of a Low pH Mycobacterial Fuel Cell
Ahmed, N. (Awdur), Gwenin, C. (Goruchwylydd), Mai 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Plant traits and litter decomposition of tree species naturally regenerating in Central America pasturelands
Sheik, M. (Awdur), Healey, J. (Goruchwylydd), 25 Ebr 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The Scottish, English & Nordic ballads
Schors, M. (Awdur), Leitmeir, C. (Goruchwylydd), 25 Ebr 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The effects of different approaches to reminiscence work with people with mild to moderate dementia living in care homes
Subramaniam, P. (Awdur), Woods, B. (Goruchwylydd), 23 Ebr 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Cognition and activities of daily living in ageing and dementia
Martyr, A. (Awdur), Clare, L. (Goruchwylydd), 22 Ebr 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The role of pre-supplementary motor area in spatial vector transformation: evidence from Parkinson's disease
Kerai, J. (Awdur), Leek, C. (Goruchwylydd), 12 Ebr 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Film and history : 'Planet of the Apes' as history
Chambers, A. (Awdur), Abrams, N. (Goruchwylydd), 8 Ebr 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Adaptation of ash (Fraxinus exelsior L.) to climate change
Clark, J. (Awdur), Cahalan, C. (Goruchwylydd), Ebr 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Nitrogen dynamics in boreal forests
Ackermann, K. (Awdur), DeLuca, T. (Goruchwylydd), 10 Maw 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Strategy Implementation Challenges in Public Sector Organizations in Abu Dhabi, United Arab Emirates
Al Saeedi, K. (Awdur), Karami, A. (Goruchwylydd), Maw 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Studies of low cost biological photovoltaic cells
Al-Husenawi, D. K. M. (Awdur), Holliman, P. (Goruchwylydd), Maw 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Studies of the dye sensitization of inorganic colloids used in dye-sensitized solar cells
Al-Salihi, K. J. J. (Awdur), Holliman, P. (Goruchwylydd), Maw 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Cryptanalysis Using Pattern Recognition Tools
Sharif, S. O. (Awdur), Mansoor, S. (Goruchwylydd) & Kuncheva, L. (Goruchwylydd), Chwef 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Prevalence and spread of pathogenic Escherichia Coli O157 on farms in north Wales
Adam, H. (Awdur), Jones, D. (Goruchwylydd), 29 Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The migration of large scale bed forms in the Dee Estuary
Way, O. (Awdur), Davies, A. (Goruchwylydd), 23 Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Oscar Wilde and postmodern thought
de Vries, K. (Awdur), Price, S. (Goruchwylydd), 14 Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The role of bio-inoculants on phosphorous relations of barley
Mirzaei Heydari, M. (Awdur), Brook, R. (Goruchwylydd), 1 Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
'Becoming a citizen of the world' : sociological study of biographical narratives of new cosmopolitans
Eichsteller, M. (Awdur), Davis, H. (Goruchwylydd), Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Fantastical journeys : an investigation of magical realist travel fiction, including Eithe's Way, a magical realist novel and Fantastical journeys: a fusion form, a critical thesis
Waller, R. (Awdur), Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Historical writing in medieval Wales
Jones, O. (Awdur), Pryce, H. (Goruchwylydd), Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Information needs and experience of knowledge exchange of young people with epilepsy and parents during transition from children to adult services: comparative embedded case study
Lewis, S. A. (Awdur), Noyes, J. (Goruchwylydd), Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Personal Epistemology and its Influence on Teaching and Learning in Higher Education
Clancy, D. (Awdur), Fazey, J. (Goruchwylydd), Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Physiological stressors : the effects of sleep disruption, energy restriction and prolonged exercise on thermoregulation and immune function
Harper Smith, A. (Awdur), Walsh, N. (Goruchwylydd), Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
The functions of self-injury
Ripley, A. (Awdur), Swales, M. (Goruchwylydd), Ion 2013Traethawd ymchwil myfyriwr: Doethuriaethau Proffesiynol
The undermining of the indemnity principle - a plea for a return to basics and the rediscovery of full indemnity in insurance law - a case study of Vietnam
Nguyen, B. (Awdur), Griffiths, A. (Goruchwylydd) & Jing, Z. (Goruchwylydd), Ion 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Allfudiaeth pobl ifanc o'r bröydd Cymraeg
Wynn, L. A. C. (Awdur), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Applications of modified plant extracts in controlling parasites
Ahmad, N. A. (Awdur), Baird, M. (Goruchwylydd) & Al-Dulayymi, J. (Goruchwylydd), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
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Archeo Ficto: a study of fictional narratives in arachaeology
Sims, A. J. P. (Awdur), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Development of a new analytical method to diagnose tuberculosis
Sirhan, M. M. (Awdur), Baird, M. (Goruchwylydd) & Al-Dulayymi, J. (Goruchwylydd), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Elasmobranchs of the Persian (Arabian) Gulf: diversity, taxonomy, and fisheries studies to inform sustainable management.
Moore, A. (Awdur), McCarthy, I. (Goruchwylydd), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Gait Analysis in Autism: A Potential Diagnostic Tool
Forster, K. (Awdur), Wimpory, D. (Goruchwylydd), 2013Traethawd ymchwil myfyriwr: Graddau Meistr trwy Ymchwil
Identification and Characterisation of Novel Cancer-Testis Genes in Human Cancer Cell Lines
Anderson, R. (Awdur), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Malnutrition and quality of life in older people admitted to hospital
Rasheed, S. (Awdur), Woods, B. (Goruchwylydd), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Mind over muscle? Psychobiolgy of exercise tolerance
Staiano, W. (Awdur), Parkinson, J. (Goruchwylydd), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Reimbursement decisions for new medicines: exploration of the preferences of decision-makers and the public
Linley, W. G. (Awdur), Hughes, D. (Goruchwylydd) & Edwards, R. T. (Goruchwylydd), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth
Sgiliau Iaith a Gwybyddiaeth Plant Dwyieithog mewn Cyd- destun Iaith Leiafrifol.
Rhys, M. (Awdur), Ware, J. (Goruchwylydd), 2013Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth