TY  - BOOK
AU  - Bhimappa K. Channal
AU  -  K. K. Math, 
TI  - Effect of organic and inorganic sources of nutrients on soil fertility and productivity of maize (zea mays l.)
U1  - 630 
PY  - 2013///
CY  - Dharwad
PB  - University of Agricultural Sciences Dharwad
ER  -