TY  - BOOK
AU  - T. Giridharakrishna
AU  -  T. Satyanarayana  Department of Soil Science and Agricultural Chemis
TI  - Studies on Chemistry of phosphorus in vertisols
U1  - 630 
PY  - 1993///
CY  - Dharwad
PB  - University of Agricultural Sciences, Dharwad
ER  -