TY  - BOOK
AU  - Ricklefs, Robert E.
TI  - The economy of nature
SN  - 071673883X 
U1  - 577 21st ed.
PY  - 2001///
CY  - New York
PB  - W.H. Freeman
KW  - Ecology
N1  - Index: pp 534-50
ER  -