TY  - BOOK
AU  - Brewer,Richard
TI  - Principles of ecology
SN  - 0721619886
AV  - QH541 .B73
U1  - 574.5 
PY  - 1979///
CY  - Philadelphia
PB  - W. B. Saunders Company
KW  - Ecology
N1  - Includes bibliographies and index
ER  -