TY  - BOOK
AU  - Yawalkar, K. S. and others,
TI  - Manures and Fertilizers
U1  - 631.8 
PY  - 1977///
CY  - Nagpur
PB  - Agri - Horticultural Pub. House
KW  - Fertilizers
KW  - Manures
ER  -