1. B.T.O./R.S.P.B. Committee on Toxic Chemicals. ‘Deaths of Birds and Mammals connected with Toxic Chemicals’. Report No. 1, 1960
2. The effects on birds of certain chlorinated insecticides used as seed dressings
3. , , & , Trans. 25th N. Am. Wildl. Conf., 1960, p. 277
4. Ministry of Agriculture, Fisheries and Food (London). Pesticides and Wildlife Report. 9th July 1963
5. The status of the Peregrine in Great Britain