TY  - GEN
AU  - Martin, John H.
AU  - Stamp, David L.
AU  - Waldren, Richard P.
TI  - Principles of field crop production
SN  - 0130259675
U1  - 633.0973 
PY  - 1949///
CY  - New Jersey
PB  - Prentice Hall
KW  - Agriculture
KW  - Field crops
KW  - Crop production
ER  -