1. 1959
2. Calcareous algae of the silurian of the Welsh border

   Green, H. (Awdur), Ebr 1959

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3. 1958
4. A Study in the Experimental Taxonomy of some British Sphagha (section Cuspidata),with observations of their ecology.

   Agnew, S. (Awdur), 5 Mai 1958

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