1. The otter in Britain.;ANON;Oryx,1969
2. ARNOLD , H. R. JERRERIES , D. J. 1988 Mammal report for 1986 and 1987. Annual Report of Huntingdonshire Fauna & Flora Society, 40; 27-31
3. Dieldrin residues in the livers of kestrels and barn owls found dead in 1970-1973.;BELL;Annual Report of the Institute of Terrestrial Ecology,1975