TY  - BOOK
AU  - S M Warad
AU  -  H M Manjunathaiah  Department of Soil Science and Agricultural Chemis
TI  - Influence of farmyard manure on phosphoprus availability in vertisol to sunflower (helianthus annuus L.)
U1  - 630 
PY  - 1992///
CY  - Dharwad
PB  - University of Agricultural Sciences, Dharwad
ER  -