Title: Levite partii i techeniia v mezhdunarodnoto rabotnichesko dvizhenie do Oktomvri 1917 g. : materiali ot bulgaro-suvetskiia simpozium 26-27 mai 1987 g. /
Authors: Koleva, Tati︠a︡na Angelova, 1931-1976.
Publisher: In-t po istoriia na BKP TsK na BKP,
Year: 1989