TY  - BOOK
AU  - Connor, David J
AU  - LOOMIS,ROBERT S and CASSMAN,KENNETH G
TI  - Crop ecology : productivity and management in agricultural systems
SN  - 0521744034
U1  - 629/CON 
PY  - 2011///
CY  - New York
PB  - Cambridge University Press
KW  - Agricultural ecology
KW  - Crops
ER  -