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DISTRIBUTION OF PYROPHOSPHATE-EXTRACTABLE IRON AND ORGANIC CARBON IN SOILS OF VARIOUS GROUPS
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ION-EXCHANGE STUDIES OF PHOSPHATES .3. COMPLEX FORMATION BETWEEN TERVALENT METALS AND ORTHOPHOSPHORIC ACID
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MALKOVA TV, 1964, ZH NEORG KHIM+, V9, P2347
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MALKOVA TV, 1965, ZH NEORG KHIM, V10, P72
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DITHIONITE- AND OXALATE-EXTRACTABLE FE AND AL AS AIDS IN DIFFERENTIATING VARIOUS CLASSES OF SOILS
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[8]
DIFFERENTIATION OF FORMS OF EXTRACTABLE ION AND ALUMINUM IN SOILS
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NAZARENKO VA, 1969, ZH ANALITICHESKOI KH, V21, P670