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S71 3	Some general problems of paper chromatography. Relations beetween paper chromatographic behaviour and chemical structure. Attempts at systematic analysis [Текст] : Symp. organized by the Chromatography Group of the Czechosl. Chemical Soc. at Liblice on 23rd June 1961 / ed. by I. M. Hais, K. Macek. — Prague : Publ. House of The Czechosl. Acad. of Sciences, 1962. — 220 p.