TY  - BOOK
AU  - Singh, S.S. 
TI  - Soil fertility and nutrient management/by S.S. Singh
SN  - 8127213152
U1  - 631.42 
PY  - 2004///
CY  - Ludhiana
PB  - Kalyani Publishers
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  -  Soil Fertility
ER  -