TY  - BOOK
AU  - Hughes,Harold D.
AU  - Henson
AU  - Hughes,Harold D.
AU  - Metcalfe,Darrel,S.
AU  - Johnson,Iver J.
TI  - Crop production: principles and practices
U1  - 633 
PY  - 1957///
CY  - New York
PB  - Macmillan
KW  - Field crops
KW  - Genetics
KW  - Crop science
KW  - Food crops
KW  - Forage plants
KW  - Energes crops
N1  - Includes index
ER  -