TY  - BOOK
AU  - Yawalkar, K. S. and others,
TI  - Manures and Fertilizers
U1  - 631 
PY  - 1984///
CY  - Nagpur
PB  - Agri - Horti Pub.
KW  - Fertilizers
KW  - Manures
KW  - Techniques, equipment & materials
ER  -