Some general problems of paper chromatography, relations between paper chromatographic behaviour and chemical structure, attempts at systematics analysis : a symposium organized by the Chromatography Group of the Czechoslovak Chemical Society at Liblice on 23rd June 1961 - Hais, Ivo M., 1918-1996; Macek, Karel, 1928-2011 (Nakladatelství Československé akademie věd, 1962)