Velikata Oktomvriĭska sotsialisticheska revoliutsiia.
Contributors: Vasilev, Khristo Georgiev; Nauchnoizsledovatelski institut po pedagogika "Akad. T. Samodumov"
Publisher: Nar. prosveta
Published: 1968
Place of publication: Sofiia
Language: bul
Number of pages: 269
Subjects: Education -- Bulgaria