TY  - BOOK
AU  - Grubb,Peter J  .
AU  - Whittaker,John B  .
TI  - Toward a more exact ecology / 
SN  - 0632026855
U1  - 577 
PY  - 1989///
CY  - London : 
PB  - Blackwell Scientific Publications , 
KW  - ECOLOGY
N1  - Includes bibliographical references and index
ER  -