50 godini spet︠s︡ialnost geologii︠a︡
Subtitle: i︠u︡bileen sbornik
Publisher: Universitetsko izd-vo "Sv. Kliment Okhridsi"
Published: 1997
Place of publication: Sofii︠a︡
Language: bul
Number of pages: 138
Notes: Includes bibliographical references.

Text in Russian and English.