TY  - BOOK
AU  - Lal R Ed.
AU  -  Greenland D J Ed.
TI  - Soil physical properties and crop production in th
U1  - J:1:7.192.N7, L9 
PY  - 1979///
CY  - New York
PB  - John Wiley U. S. A.     
KW  - Agriculture
N1  - Bibliography p.533-36
ER  -