TY  - BOOK
AU  - Beck,Alan M.
TI  - The ecology of stray dogs: a study of free-ranging urban animals 
SN  - 0912752025
U1  - 599.772 23
PY  - 1973///]
CY  - Baltimore
PB  - York Press
KW  - Canis lupus familiaris
N1  - Bibliografía: p. 85-92
ER  -