- MS-14-REF, Box 16, Folder 4
Part of William Threlfall collection
This file contains the thesis titled "Studies on the helminth parasites of herring gulls (Larus argentatus Pontopp.) on the Newborough Warren Nature Reserve, Anglesey" / by William Threlfall. 1965. Ph.D. Thesis. "A thesis submitted to the University of Wales in candidature for the degree of Philosphiae Doctor". Also includes 2 pages of handwritten data and an article by the same author: Threlfall, William. (1963) Factors concerned in the mortality of some birds which perished in Anglesey and Northern Caernarvonshire during the winter of 1963, with special reference to parasitism by helminths. Annals And Magazine Of Natural History, vol. 6, no. 72, 721-737.