TY  - BOOK
AU  - 
TI  - Animal ecology,
T2  - Text-books of animal biology
U1  - 591.7 ELT 
PY  - 1927///
CY  - New York
PB  - Macmillan Co.
KW  - Animal ecology
N1  - "List of references": p. 192-200
ER  -