TY  - BOOK
AU  - Loomis, R. S
AU  - Connor, D. J
TI  - Crop ecology : productivity and management in agricultural systems
SN  - 9780521387767
SN  - 91029201
U1  - 631 LOO 
PY  - 1992///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Agricultural ecology
KW  - Agricultural systems
N1  - Includes bibliographical references (p. 493-514) and index
ER  -