TY  - BOOK
AU  - MAVI, Manpreet Singh
TI  - Effect of crop residues and organic manures on movement and transformations of urea in soils
U1  - 631.42 M47E 
PY  - 2003///
PB  - Ludhiana
KW  - SOIL FERTILITY
KW  - CROP RESIDUES
ER  -