TY  - BOOK
AU  - Martin, John H. 
AU  - Leonard, Warren H. 
AU  - Stamp, David L. 
TI  - Principles of field crop production/by John H. Martin, Warren H. Leonard and David L. Stamp
SN  - 0023767200
U1  - 633  
PY  - 1976///
CY  - New York: 
PB  - Macmillan Publishing Co. 
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Field crops
ER  -