Manual on Soil, Plant and Water Analysis - Dhyan Singh; P.K. Chhonkar B.S. Dwivedi (New Delhi Westville Publishing House, 2005)
Dhyan Singh; P.K. Chhonkar & B.S. Dwivedi: Manual on Soil, Plant and Water Analysis. New Delhi. Westville Publishing House, 2005. 81-85873-26-7 Rs. 600.00--(631.41SIN)
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