Fertility evaluation of paddy soils in South and Southeast Asia first approximation chemical potentiality rating - Kyuma, Kazutake; Kawaguchi, Keizaburo, 1914- (Kyoto University, Kyoto The Center for Southeast Asian Studies, 1971)
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Keywords: Soil fertility -- South Asia; Soils -- South Asia; Soils -- Asia, Southeastern; Soil fertility Asia, Southeastern