Phosphorus in soil,crops and fertilizers.
Indian Society of Soil Science,New Delhi.
Phosphorus in soil,crops and fertilizers. - New Delhi IISS 1979 - 611
Soil Chemistry/Analysis Soil Fertility
631.41
Phosphorus in soil,crops and fertilizers. - New Delhi IISS 1979 - 611
Soil Chemistry/Analysis Soil Fertility
631.41