TY  - BOOK
AU  - Sukhdev Singh
TI  - (i) Effect of tillage treatments on soils properties and crop yields (ii) Effect of crop rotations on soil physical properties (iii) Development of a new method for the determinati
U1  - T 631.4 S60E 
PY  - 1969///
CY  - Ludhiana
PB  - PAU
KW  - SOILS
ER  -