TY  - BOOK
AU  - Krebs, Charles J.
TI  - Ecology: the experimental analysis of distribution and abundance 
U1  - DC 577 1972
PY  - 1972///
CY  - New York
PB  - Harper & Row Pub. Inc.
KW  - 	Ecology -- Experiments -- Juvenile literature
N1  - Includes bibliography nad index
ER  -