1. The Ecology of Stray Dogs: A Study of Free-ranging Urban Animals;Beck,1973
2. The ecology of “feral” and free-roving dogs in Baltimore;Beck,1974
3. The ecology of urban dogs;Beck,1979
4. The ecology of dog bite injury in St. Louis, Missouri;Beck;Public Health Rep.,1975
5. The significance and dynamics of stray dog populations with special reference to the U.K. and Japan;Carding;J. Small Anim. Pract.,1969