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2. Phosphate solubilizing microorganisms of a Lateritic soil. I. Solubilization of inorganic phosphates and production of organic acids by microorganisms isolated in sucrose-calcium phosphate agar plates;Banik;Zbl. Bakt. II. Abt.,1981
3. Methods of Soil Analysis Part 2;Bardsley,1960
4. Bergey's Manual of Determinative Bacteriology,1974
5. Turbidimetric determination of available sulphates;Chesnin;Soil Sc. Soc. Am. Proc.,1951