TY  - BOOK
AU  - Ehrlich Paul R.
TI  - The science of ecology
SN  - 9780023317002
AV  - QH 541.E35 1987 7421
PY  - 1987///
CY  - New York
PB  - Macmillan publishing company
KW  - Ecology
N1  - Includes index
ER  -