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New buffer pH method for rapid estimation of exchangeable acidity and lime requirement of soils 1
, 1976A. Mehlich
semanticscholar +1 more source
Ammonium nitrate as extractant for soil exchangeable cations, exchangeable acidity and aluminum
, 1984A. Stuanes, G. Ogner, M. Opem
semanticscholar +1 more source
Cation-exchange in oxalic acid-nitric acid media
Fresenius' Zeitschrift für analytische Chemie, 1984R. Kuroda, N. Hosoi
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