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2. Matrix interferences in the determination of iron by atomic absorption spectrophotometry;Ball;At. Absorp. Newsl.,1975
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4. Genetic evaluation of profile distribution of aluminium, iron and manganese oxides;Blume,1969
5. A leaching method for the extraction of acid oxalate-soluble aluminium and iron from soil in conjunction with cation exchange leachings;Daly;Commun. Soil Sci. Plant Anal.,1974