TY  - BOOK
AU  - Chapman, Stephen R.
AU  -  Carter, Lark P. 
TI  - Crop production : principles and practices / 
U1  - 633 22
PY  - 1976///
CY  - Delhi, India : 
PB  - Surjeet Publications. 
KW  -      Field crops.
KW  - Field crops-
KW  - North America
KW  - Agronomy.
N1  - Includes bibliographies and index
UR  - http://catalog.loc.gov/vwebv/holdingsInfo?searchId=21597&recCount=25&recPointer=3&bibId=328884
ER  -