Phosphorus in soils, crops and fertilizers. / Indian Society of Soil Science. Indian Society of Soil Science. Soils -- Phosphorus content. Phosphorus in agriculture. Phosphatic fertilizers 631.85 INP Includes bibliography and index . New Delhi : Indian Society of Soil Science, c1979. c1979. 1979 Text [viii], 611p. : eng Bulletin (Indian Society of Science), no. 12.