TY  - BOOK
AU  - Martin, John H, Leonard, Warren H and Stamp, David L.
TI  - Principles of field crop production
SN  - 0023767200
U1  - 633 MAR 
PY  - 1976///
CY  - New York
PB  - Macmillan Publishing Co. Inc.
KW  - Crop production
N1  - includes index
ER  -