TY  - BOOK
AU  - Ricklefs,Robert E.
TI  - The economy of nature: a textbook in basic ecology 
SN  - 071672409X
AV  - QH541 .R54 1993
U1  - 574.5  22nd ed.
PY  - 1993///
CY  - New York
PB  - W.H.Freeman and Co.
KW  - Ecology
N1  - Includes bibliographical references and index
ER  -