TY  - BOOK
AU  - Seigler, David S.
TI  - Crop Resources
SN  - 0126349509
U1  - 338.173 
PY  - 1977///
CY  - New York
PB  - Academic Press
KW  - Economics
KW  - Social sciences
KW  - Cultivated plants
KW  - Field crops
ER  -