TY  - GEN
AU  - Harold D. Hughes
TI  - Crop production
U1  - 630,HUG 
PY  - 1972///
CY  - Macmillan Publishing Co
PB  - London
KW  - Harold D. Hughes
KW  - Crop production
N1  - Agriculture beginnings (Page-1), World production distribution (Page-10), US production distribution (Page-27), The world food population problem (Page-41), Agricultural production adjustments (Page-57), Climate weather and crops (Page-71), Water use by crops (Page-142), Irrigation ,drainage and dryland farming (Page-156), The soil and croping practices (Page-176), Wheat and rye (Page-352), The soybean crop (Page-370), Potatos (Page-430), Alfalfa (Page-503), Dryland grasses (Page-567), Crop enemies (Page-577), Crop terms (Page-602)
ER  -