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