TY  - BOOK
AU  - Whittaker Robert H.
TI  - Communities and ecosystems / 
U1  - 574.5 WHI  
PY  - 1970///.
CY  - London : 
PB  - The Macmillan Company, 
KW  - Ecology
KW  - Biotic communities
KW  - Culture
KW  - Plant species
N1  - Includes index.
ER  -