TY  - BOOK
AU  - Whittaker,Robert Harding
TI  - Communities and ecosystems
T2  - Current concepts in biology series
AV  - QH541 .W44
U1  - 574.5/5 
PY  - 1970///]
CY  - [New York]
PB  - Macmillan
KW  - Ecology
N1  - Includes bibliographical references
ER  -