Porth Ymchwil

Professor Rhiannon Tudor Edwards

Athro

Aelodaeth

Dolenni cyswllt

ORCID: 0000-0003-4748-5730

Contact info

Cyfarwyddwr sefydlu ymchwil economeg iechyd ym Mhrifysgol Bangor. Cyd-gyfarwyddwr y Ganolfan Economeg a Gwerthuso Meddyginiaethau (CHEME) ym Mhrifysgol Bangor.

Mewn dadansoddiad byd-eang o lyfryddiaeth mewn economeg iechyd (1975-2022), rhestrwyd Rhiannon ymhlith yr awduron pwysicaf ym maes economeg iechyd. Roedd hi ymhlith y pum awdur mwyaf cydweithredol, gyda Phrifysgol Bangor yn un o’r 10 sefydliad mwyaf cydweithredol ym maes economeg iechyd. Gweler: Barbu, L. Global trends in the scientific research of the health economics: a bibliometric analysis from 1975 to 2022. Health Econ Rev 13, 31 (2023).

Ffôn: +44 (0) 1248 383 712

E-bost: r.t.edwards@bangor.ac.uk

Cyfeiriad: Ystafell 103, Ardudwy, Safle Normal, Prifysgol Bangor, Bangor, Gwynedd LL57 2PZ

X (Trydar): @ProfRTEdwards

 

251 - 300 o blith 328Maint y tudalen: 50
Trefnu yn ôl: Cyfenw'r awdur
  1. Cyhoeddwyd

    Warm Homes for Health End of Study Briefing 2016: Exploring the costs and outcomes of improving population health through better housing

    Edwards, R. T., Bray, N., Burns, P. & Jones, A., 2016, Prifysgol Bangor University. 4 t.

    Allbwn ymchwil: Llyfr/Adroddiad › Adoddiad Arall

  2. Cyhoeddwyd
  3. Cyhoeddwyd

    Wellness in work: The economic arguments for investing in the health and wellbeing of the workforce in Wales

    Edwards, R. T., Spencer, L., Anthony, B. & Bryning, L., 17 Hyd 2019, Bangor: Bangor University. 64 t.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn › adolygiad gan gymheiriaid

  4. Cyhoeddwyd

    Health Impact Assessment and Health Economics

    Edwards, R. & Boland, A., Mai 1998, Health and Environmental Impact Assessment: An integrated approach. Association, B. M. (gol.). Earthscan Ltd, (Health & Environment).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  5. Cyhoeddwyd

    Cost-effectiveness of steroid (methylprednisolone) injections versus anaesthetic alone for the treatment of Morton’s neuroma: economic evaluation alongside a randomised controlled trial (MortISE trial)

    Edwards, R. T., Yeo, S. T., Russell, D., Thomson, C. E., Beggs, I., Gibson, J. N. A., McMillan, D., Martin, D. J. & Russell, I. T., 25 Chwef 2015, Yn: Journal of Foot and Ankle Research. 8, 6, t. article 6 11 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  6. Cyhoeddwyd

    Paradigms and research programmes: Is it time to move from health care economics to health economics?

    Edwards, R. T., 1 Hyd 2001, Yn: Health Economics. 10, 7, t. 635-649

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  7. Cyhoeddwyd

    Public health economics: a systematic review of guidance for the economic evaluation of public health interventions and discussion of key methodological issues

    Edwards, R. T., Charles, J. M. & Lloyd-Williams, H., 24 Hyd 2013, Yn: BMC Public Health. 13, t. 1001

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  8. Cyhoeddwyd

    Incredible Years Parenting Programme: Cost-Effectiveness and Implementation

    Edwards, R. T., Jones, C. L., Berry, V., Charles, J. M., Linck, P., Bywater, T.-J. & Hutchings, J. M., 2016, Yn: Journal of Children’s Services. 11, 1, t. 54-72

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  9. Cyhoeddwyd

    Well-being and well-becoming through the life-course in public health economics research and policy: A new infographic

    Edwards, R. T., 23 Rhag 2022, Yn: Frontiers in Public Health. 10, 8 t., 1035260.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  10. Cyhoeddwyd

    Well-becoming and waiting lists: UK and Australia

    Edwards, R. T., Davies, J. & Robson, S., 10 Mai 2022

    Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall

  11. Cyhoeddwyd

    Cost-utility analysis of public health interventions

    Edwards, R. & Winrow, E., 19 Maw 2019, Applied Health Economics for Public Health Practice and Research . Tudor Edwards, R. & McIntosh, E. (gol.). Oxford University Press, t. 177-203 (Handbooks in Health Economic Evaluation).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  12. Cyhoeddwyd

    The Problem Management Plus psychosocial intervention for distressed and functionally impaired asylum seekers and refugees: the PROSPER feasibility RCT

    Dowrick, C., Rosala-Hallas, A., Rawlinson, R., Khan, N., Winrow, E., Chiumento, A., Burnside, G., Aslam, R., Billows, L., Eriksson-Lee, M., Lawrence, D., McCluskey, R., Mackinnon, A., Moitt, T., Orton, L., Roberts, E., Rahman, A., Smith, G., Edwards, R. T., Uwamaliya, P. & White, R., Hyd 2022, Yn: Public Health Research. 10, 10, 104 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  13. Cyhoeddwyd

    RCT-based Social Return on Investment (SROI) of a Home Exercise Program for People With Early Dementia Comparing In-Person and Blended Delivery Before and During the COVID-19 Pandemic

    Doungsong, P., Hartfiel, N. & Edwards, R. T., 23 Ebr 2024, Yn: INQUIRY: The Journal of Health Care Organization, Provision, and Financing. 61, t. 469580241246468

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  14. Cyhoeddwyd

    The effectiveness and cost-effectiveness of vitrectomy surgery for primary idiopathic epiretinal membranes (iERMs): a systematic review

    Doungsong, P., To Kwong, H., Hartfiel, N., Sandinha, D. T., Steel, P. D. & Edwards, R. T., 7 Awst 2024, NIHR PROSPERO (International Prospective Register of Systematic Reviews).

    Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall › adolygiad gan gymheiriaid

  15. Cyhoeddwyd

    A cost-consequence analysis of a community-based rehabilitation programme following hip fracture (Fracture in the Elderly Multidisciplinary Rehabilitation—FEMuR III)

    Doungsong, P., Davies, J., Ezeofor, V., Haf Spencer, L., Williams, N. & Edwards, R. T., 26 Maw 2025, Yn: Osteoporosis International.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  16. Cyhoeddwyd
  17. E-gyhoeddi cyn argraffu

    ‘ThinkCancer!’ – Randomised feasibility trial of a novel practice-based early cancer diagnosis intervention

    Disbeschl, S., Hendry, A., Surgey, A., Walker, D., Goulden, N., Anthony, B., Neal, R., Williams, N., Hoare, Z., Hiscock, J., Edwards, R. T., Lewis, R. & Wilkinson, C., 3 Mai 2024, (E-gyhoeddi cyn argraffu) Yn: BJGP open.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  18. Cyhoeddwyd

    Protocol for a feasibility study incorporating a randomised pilot trial with an embedded process evaluation and feasibility economic analysis of ThinkCancer!: a primary care intervention to expedite cancer diagnosis in Wales

    Disbeschl, S., Surgey, A., Roberts, J. L., Hendry, A., Lewis, R., Goulden, N., Hoare, Z., Williams, N., Anthony, B. F., Edwards, R. T., Law, R.-J., Hiscock, J., Carson-Stevens, A., Neal, R. D. & Wilkinson, C., 2021, Yn: Pilot and Feasibility Studies. 7, 1, 100.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  19. Cyhoeddwyd

    The Diagnostic Pathway Experiences of People Living with Rare Dementia and Their Family Caregivers: A Cross-Sectional Mixed Methods Study Using Qualitative and Economic Analyses

    Davies Abbott, I., Anthony, B., Jackson, K., Windle, G. & Edwards, R. T., 16 Chwef 2024, Yn: International Journal of Environmental Research and Public Health. 21, 2, 231.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  20. Cyhoeddwyd

    Engaging Care Leavers: Care-leaver's Engagement with Multi-agency Services. An Evidence Informed Good Practice Toolkit

    Davies, C. T., Prendergast, L., Seddon, D., Hartfiel, N. & Edwards, R. T., Mai 2024, 2 gol. Prifysgol Bangor University. 40 t.

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn › adolygiad gan gymheiriaid

  21. Cyhoeddwyd

    Parenting intervention in Sure Start services for children at risk of developing conduct disorder: pragmatic randomised controlled trial.

    Daley, D. M., Bywater, T. J., Hutchings, J. M., Hutchings, J., Bywater, T., Daley, D., Gardner, F., Whitaker, C., Jones, K., Eames, C. & Edwards, R. T., 29 Maw 2007, Yn: British Medical Journal. 334, 7595, t. 678-682

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  22. Cyhoeddwyd

    The Potential Impact on Farmer Health of Enhanced Export Horticultural Trade between the UK and Uganda.

    Cross, P., Edwards, R. T., Nyeko, P. & Edwards-Jones, G., 28 Ebr 2009, Yn: International Journal of Environmental Research and Public Health. 6, 5, t. 1539-1556

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  23. Cyhoeddwyd

    Does farm worker health vary between localised and globalised food supply systems?

    Cross, P., Edwards, R. T., Opondo, M., Nyeko, P. & Edwards-Jones, G., 1 Hyd 2009, Yn: Environment International. 35, 7, t. 1004-1014

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  24. Cyhoeddwyd

    Comparative assessment of migrant farm worker health in conventional and organic horticultural systems in the United Kingdom.

    Cross, P., Edwards, R. T., Hounsome, B. & Edwards-Jones, G., 25 Chwef 2008, Yn: Science of the Total Environment. 391, 1, t. 55-65

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  25. Cyhoeddwyd

    Health Care Policy in Wales: Devolution and Beyond.

    Cohen, D. & Edwards, R. T., 1 Hyd 2001.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

  26. Cyhoeddwyd

    Effectiveness and micro-costing of the KiVa school-based bullying prevention programme in Wales: study protocol for a pragmatic definitive parallel group cluster randomised controlled trial

    Clarkson, S., Axford, N., Berry, V., Edwards, R. T., Bjornstad, G., Wrigley, Z., Charles, J., Hoare, Z. S., Ukoumunne, O. C., Matthews, J. & Hutchings, J. M., 1 Chwef 2016, Yn: BMC Public Health. 16, 104

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  27. Cyhoeddwyd

    The Agewell trial: a pilot randomised controlled trial of a behaviour change intervention to promote healthy ageing and reduce risk of dementia in later life

    Clare, L., Nelis, S. M., Jones, I. R., Hindle, J. V., Thom, J. M., Nixon, J., Cooney, J., Jones, C. L., Edwards, R. T. & Whitaker, C. J., 19 Chwef 2015, Yn: BMC Psychiatry. 15, 25

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  28. Cyhoeddwyd

    A randomised controlled trial of adjunctive triamcinolone acetonide in eyes undergoing vitreoretinal surgery for open globe trauma - the ASCOT study

    Charteris, D. G., Cro, S., Casswell, E. J., Edwards, R. T., Ezeofor, V., Anthony, B., Bunce, C., Elizabeth, R., Kelly, J., Murphy, C., Banerjee, P. J. & Cornelius, V. R., 1 Gorff 2023, Yn: Health Technology Assessment. 27, 12, t. 1-50

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  29. Cyhoeddwyd

    Disinvestment and reinvestment in respiratory care: use of programme budgeting and marginal analysis in north Wales, UK

    Charles, J. M., Brown, G., Thomas, K., Johnstone, F., Jones, A. & Edwards, R. T., 19 Tach 2014, Yn: The Lancet. 384, S2, t. S24

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Crynodeb Cyfarfod › adolygiad gan gymheiriaid

  30. Cyhoeddwyd

    To disinvest or invest? The role of programme budgeting and marginal analysis (PBMA) for economic evaluation and prioritization between public health interventions

    Charles, J. & Edwards, R., 14 Mai 2019, Applied Health Economics For Public Health Practice And Research. Edwards, R. & McIntosh, E. (gol.). 1 gol. Oxford: Oxford University Press, t. 312-341 (Handbooks in Health Economic Evaluation).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  31. Cyhoeddwyd

    Preferences of older patients regarding hip fracture rehabilitation service configuration: A feasibility discrete choice experiment

    Charles, J., Roberts, J., Din, N., Williams, N., Yeo, S. T. & Edwards, R., Gorff 2018, Yn: Journal of Rehabilitation Medicine. 50, 7, t. 636-642

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  32. Cyhoeddwyd

    The application of realist synthesis review methods in public health economics

    Charles, J., Edwards, R., Williams, N. & Din, N., 2013, Yn: The Lancet. 382, Special Issue, t. Page S28

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Rhifyn Arbennig › adolygiad gan gymheiriaid

  33. Cyhoeddwyd

    Use of a discrete choice experiment approach to elicit patients’ preferences for hip fracture rehabilitation services as part of a feasibility study

    Charles, J., Roberts, J., Din, N., Williams, N., Yeo, S. T. & Edwards, R., 25 Tach 2016, Yn: The Lancet. 388, Supplement 2, t. S35

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Crynodeb Cyfarfod › adolygiad gan gymheiriaid

  34. Cyhoeddwyd

    Use of programme budgeting and marginal analysis as a framework for resource reallocation in respiratory care in North Wales, UK

    Charles, J. M., Chrles, J. M., Brown, G., Thomas, K., Johnstone, F., Vandenblink, V., Pethers, B., Jones, A. & Edwards, R. T., 16 Medi 2015, Yn: Journal of Public Health. t. 1-10

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  35. Cyhoeddwyd

    Intervention Now To Eliminate Repeat Unintended Pregnancy in Teenagers (INTERUPT): a systematic review of intervention effectiveness and cost-effectiveness, qualitative and realist synthesis of implementation factors and user engagement.

    Charles, J. M., Williams, N. H., Whitaker, R., Hendry, M., Booth, A., Carter, B., Charles, J., Craine, N., Edwards, R. T., Lyons, M., Noyes, J., Pasterfield, D., Rycroft-Malone, J. & Williams, N., 10 Ebr 2014, Yn: BMJ Open. 4, 4

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  36. Cyhoeddwyd

    Micro-costing and a cost-consequence analysis of the ‘Girls Active’ programme: A cluster randomised controlled trial.

    Charles, J., Harrington, D., Davies, M., Edwardson, C., Gorely, T., Bodicoat, D., Khunti, K., Sherar, L., Yates, T. & Edwards, R., 16 Awst 2019, Yn: PLoS ONE. 14, 8, e0221276.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  37. Cyhoeddwyd

    Randomised controlled trial of adjunctive triamcinolone acetonide in eyes undergoing vitreoretinal surgery following open globe trauma: The ASCOT study

    Casswell, E. J., Cro, S., Cornelius, V. R. C., Banerjee, P. J., Zvobgo, T. M. Z., Edwards, R. T., Ezeofor, V., Anthony, B. & Shahid, S. M., Maw 2024, Yn: British Journal of Ophthalmology. 108, 3, t. 440-448

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  38. Cyhoeddwyd

    Long-term effectiveness of a parenting intervention for children at risk of developing conduct disorder.

    Bywater, T. J., Daley, D. M., Hutchings, J. M., Bywater, T., Hutchings, J., Daley, D., Whitaker, C. J., Yeo, S. T., Jones, K., Eames, C. & Edwards, R. T., 1 Medi 2009, Yn: British Journal of Psychiatry. 195, 4, t. 318-324

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  39. Cyhoeddwyd

    Incredible Years parent training support for foster carers in Wales: A multi-centre feasibility study

    Bywater, T. J., Hutchings, J., Linck, P., Whitaker, C. J., Daley, D., Yeo, S. T. & Edwards, R. T., 21 Medi 2010, Yn: Child: care, health and development. 37, 2, t. 233-243

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  40. Cyhoeddwyd

    Parenting programme for parents of children at risk of developing conduct disorder: cost effectiveness analysis.

    Bywater, T. J., Hutchings, J. M., Hughes, D., Edwards, R. T., Ceilleachair, A., Bywater, T., Hughes, D. A. & Hutchings, J., 31 Maw 2007, Yn: British Medical Journal. 334, 7595, t. 682-685

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  41. Cyhoeddwyd

    Physical activity self-management and coaching compared to social interaction in Huntington’s disease: Results from the ENGAGE-HD randomized, controlled, pilot feasibility trial

    Busse, M., Quinn, L., Drew, C., Kelson, M., Trubey, R., McEwan, K., Jones, C., Townson, J., Dawes, H., Edwards, R., Rosser, A. & Hood, K., 1 Meh 2017, Yn: Physical Therapy. t. 625-639

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  42. Cyhoeddwyd

    Supporting physical activity engagement in people with Huntington's disease (ENGAGE-HD): study protocol for a randomized controlled feasibility trial.

    Busse, M., Quinn, L., Dawes, H., Jones, C. L., Kelson, M., Poile, V., Trubey, R., Townson, J., Edwards, R. T., Rosser, A. & Hood, K., 12 Rhag 2014, Yn: Trials. 15

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  43. Cyhoeddwyd

    M11 A randomised controlled feasibility trial of a physical activity behaviour change intervention compared to social interaction in huntington’s disease

    Busse, M., Quinn, L., Drew, C., Kelson, M., Trubey, R., McEwan, K., Jones, C., Townson, J., Dawes, H., Edwards, R., Rosser, A. & Hood, K., 1 Medi 2016, Yn: Journal of Neurology, Neurosurgery and Psychiatry. 87, Suppl 1, t. A105 1 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Crynodeb Cyfarfod › adolygiad gan gymheiriaid

  44. Cyhoeddwyd

    Protocol for the Rare Dementia Support Impact Study: RDS Impact

    Brotherhood, E., Stott, J., Windle, G., Barker, S., Culley, S., Harding, E., Camic, P. M., Caulfield, M., Ezeofor, V., Hoare, Z., McKee-Jackson, R., Roberts, J., Sharp, R., Suarez-Gonzalez, A., Sullivan, M. P., Edwards, R. T., Walton, J., Waddington, C., Winrow, E. & Crutch, S. J., Awst 2020, Yn: International Journal of Geriatric Psychiatry. 35, 8, t. 833-841 9 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  45. Cyhoeddwyd

    Perceptions of the impact of disability and impairment on health, quality of life and capability

    Bray, N., Edwards, R. T., Squires, L. & Morrison, V., 24 Mai 2019, Yn: BMC Research Notes. 12, 1, t. 287 6 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  46. Cyhoeddwyd

    Development of a Preference-Based Measure of Mobility-Related Quality of Life

    Bray, N., Edwards, R. T. & Spencer, L., Gorff 2019.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Crynodeb

  47. Cyhoeddwyd

    Wheelchair Outcomes Assessment Tool for Children: Summary Report

    Bray, N., Tuersley, L. & Edwards, R. T., 2018, Prifysgol Bangor University. 36 t.

    Allbwn ymchwil: Llyfr/Adroddiad › Adoddiad Arall

  48. E-gyhoeddi cyn argraffu

    Development of a value-based scoring system for the MobQoL-7D: a novel tool for measuring quality-adjusted life years in the context of mobility impairment

    Bray, N., Tudor Edwards, R. & Schneider, P., 11 Ion 2024, (E-gyhoeddi cyn argraffu) Yn: Disability and Rehabilitation. 10 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  49. Cyhoeddwyd

    Preference-based measures of health-related quality of life in congenital mobility impairment: a systematic review of validity and responsiveness

    Bray, N., Spencer, L. H. & Edwards, R. T., 21 Ebr 2020, Yn: Health Economics Review. 10, 1, 9.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  50. Cyhoeddwyd

    Antipsychotic and Benzodiazepine prescribing prevalence and costs in people with dementia and challenging behaviours, living in care homes

    Bray, N., Hilton, A., Hounsome, B., Zou, L., Whitaker, C., Moniz-Cook, E., Hart, C., Woods, R. & Edwards, R. T., 24 Maw 2013.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

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