TY  - BOOK
AU  - CARLSON, Peter S
TI  - Biology of crop productivity
U1  - 633:574 
PY  - 1980///
CY  - New York
PB  - Academic
KW  - Crop improvement
KW  - Crop productivity
KW  - Mutagenesis
KW  - Nitrogen fixation
KW  - Plant water relation
ER  -