TY  - BOOK
AU  - Yawalkar, K. S. and others,
TI  - Manures and Fertilisers
U1  - 631 
PY  - 1981///
CY  - Nagpur
PB  - Agri - Horticultural Pub. House
KW  - Fertilisers
KW  - Techniques, equipment & materials
ER  -