TY  - BOOK
AU  - Clapham,Wentworth B.
TI  - Natural ecosystems
SN  - 0023225203 (pbk.)
AV  - QH541 .C45 1983
U1  - 574.5 19
PY  - 1983///
CY  - New York
PB  - Macmillan
KW  - Ecology
N1  - Includes bibliographies and index
ER  -