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Tsypkina, O.Y., Study of Vacuum Pressure Influence on Efficiency of Separation of Some Polynuclear Compounds of Coal Tar Rectifications, Zh. Prikl. Khim. (Moscow), 1955, 28, 2, 185-192. [all data]
Tsypkina, O.Y., J. Appl. Chem. USSR (Engl. Transl.), 1955, 28, 167. [all data]
Tsypkina, O.Y., Zh. Prikl. Khim. (Leningrad), 1955, 28, 185. [all data]