1. Peregrines and pesticides in Alaska;Cade;Condor,1968
2. Eggshell thinning and organo-chlorine residues in Rocky Mountain peregrines, Falco peregrinus, and their prey;Enderson;Can. Field-Naturalist,1982
3. Organochlorine pesticide residues in small migratory birds, 1964-73;Johnston;Pestic. Monit. J.,1975
4. Organochlorine residues in Alaskan peregrine falcons ( Falco peregrinus. Tunstall), rough-legged hawks ( Buteo lagopus Pontoppidan) and their prey;Lincer;Can. Field-Naturalist,1970