TY  - BOOK
AU  - Ricllefs,Robert E.
TI  - The economy of nature: a textbook in basic ecology 
SN  - 071672815X
AV  - QH541 R54 1997
PY  - 1997///
CY  - New York
PB  - W. H. Freeman And Co.
KW  - Ecology
N1  - Includes index
ER  -