Pûrvouchiteliat.
Publisher: Narodna prosveta
Published: 1969
Place of publication: Sofiia
Language: bul
Number of pages: 2133
Subjects: Cyril, -- Saint, Apostle of the Slavs, -- ca. 827-869.; Methodius, -- Saint, Apostle of the Slavs, -- ca. 825-884 or 5.
Notes: Summaries and list if illustrations in English, French, German and Russian.

Bibliography: p. 213-[214]