TY  - GEN
AU  - Petrusewicz, K
AU  - Macfadyen, A
TI  - Productivity of terrestrial animals principles and methods
T2  - IBP Handbook, No.13
U1  - 591.31 
PY  - 1970///
CY  - London
PB  - International Biological Programme
KW  - ZOOLOGY
ER  -