Handbook of Soil, Fertilizer and Manure.
Gupta P K
Handbook of Soil, Fertilizer and Manure. Soil ,Plant, Water and Fertilizer Analysis Gupta,P.K.; - Bikaner Agro Botanica 1999 - xiii 431pp
Fertilizer Analysis
Handbook of Soil, Fertilizer and Manure. Soil ,Plant, Water and Fertilizer Analysis Gupta,P.K.; - Bikaner Agro Botanica 1999 - xiii 431pp
Fertilizer Analysis