TY  - BOOK
AU  - Gupta,U.S.
TI  - Crop improvement: physiological attributes 
SN  - 0813313805
AV  - SB106 .I47G87 1992
PY  - 1992///
CY  - Boulder
PB  - Westview
KW  - Crop improvement
KW  - Crops
KW  - Physiology
ER  -