TY  - BOOK
AU  - Chapman,Stephen R.
AU  - Carter,Lark P.
TI  - Crop production: principles and practices 
SN  - 0716705818
AV  - SB185 .C31
U1  - SB185 
PY  - 1976///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Field crops
KW  - North America
N1  - Includes bibliographies and index
ER  -