TY  - BOOK
AU  - Yawalkar, K S  .
AU  - Agarwal ,J P  .
AU  - Bokde,S  .
TI  - Manures and fertilizers / 
U1  - 631.8 
PY  - 1984///
CY  - Nagpur : 
PB  - Agri-Horticultural publishing house , 
ER  -