TY  - GEN
AU  - Lal,R.
AU  - Greenland,D.J.
TI  - Soil physical properties and crop production in the tropics
PY  - 1979///
CY  - Dehra Dun
PB  - International Book Distributors
KW  - Soil physcial properties
KW  - Crop production
KW  - Tropics
ER  -