TY  - BOOK
AU  - Ricklefs,Robert E..
TI  - The economy of nature : a textbook in basic ecology / 
SN  - 071672409X
U1  - 577 
PY  - 1993///
CY  - New York : 
PB  - W H Freeman , 
KW  - ECOLOGY
N1  - NULL
ER  -