Szukana fraza: [Bibliografia = %2228. Mehra%2C O.%2C Jackson%2C J. %5C(1960%5C)%2C Iron oxide removal from soils and clays by a dithionite%5C-citrate system buffered with sodium bicarbonate. Clay and Clays Minerals%2C 5%5C: 317%5C-327.%22]

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