Sbornik ot nauchni trudove po geologii͡a i minno delo
By: Vissh minno-geolozhki institut, Nauchnoizsledovatelski sektor
Publisher: The Institute
Published: 1965
Place of publication: Sofii͡a
Language: bul
Number of pages: 507
Notes: Text in Bulgarian; Russian and French or German summaries.

Table of contents also in French, German, and Russian.

Includes bibliographies.