Tandon, H L S Sulphur research and agricultural production in India - 2nd ed. - New Delhi: Fertiliser Development and Consultation Organisation, 1986 - viii, 76p. ISBN: 81-85116-02-4 Subjects--Topical Terms: Agriculture Subjects--Index Terms: Soils Crop Universal Decimal Class. No.: 631.811.7.001.5(540) / M6