TY  - BOOK
AU  - P.K. Gupta
TI  - A handbook of soil, Fertilizer and manure
SN  - 81-7754-152-8
U1  - Ref. 631.802 G95 C2010 
PY  - 2010///
CY  - India
PB  - Agrobios (India)
ER  -