547.9
M19 2	Main and section Lectures presented at the International Symposium on Macromolecular Chemistry held under the auspices of the International Union of pure and applied chemistry, Prague, Septembre 1957 [Текст] : special issue of the Collection of Czechoslovak chemical communications / Czechoslovak Acad. of Science, Czechoslovak Chemical Society. — Prague : Czeshoslovak Acad. of Science, 1957. — 306 p., [11] p. ill.