TY  - BOOK
AU  - Lal, R., ed.
TI  - Soil physical properties and crop production in the tropics
U1  - 631.43:633.002(213) L9 
PY  - 1979///
CY  - Dehra Dun
PB  - IBD
KW  -  R.Lal and D.J.Greenland.
KW  - Greenland, D.J., ed.
KW  - Soil physics,Crop production
ER  -