TY  - BOOK
AU  - Ricklefs robert e.
TI  - Ecology
SN  - 0-7167-2829-X
AV  - 577/RIC 3
U1  - 577/RIC Fourth edition
PY  - 1973///
CY  - New york 
PB  - W.H. FREEMAN AND COMPANY
ER  -