June 1951 – vol. 44, issue 6–211 West Midland Bird Distribution Survey.--Compiled and produced by C. A. Norris. (Published for Private Circulation). A Book of Ducks.--By Phyllis Barclay-Smith. (Penguin Books, 3/6). Animal Evolution.--By G. S. Carter. (Sidgwick & Jackson, 30/-). Zoogeography of the Land and Inland Waters.--By L. F. de Beaufort. (Sidgwick & Jackson, 30/-). The Third Annual Report of the Severn Wildfowl Trust, 1949-50.... This article is only available to registered users.To read more, please log in or purchase a subscription.