Issues for Oct./Dec. 1939- lack French title.
In French and Russian; summaries in Georgian and German.
Issued by: Pʻizikis da geopʻizikis instituti, <Apr.-June>-July-Sept. 1939; Pʻizikis da geopʻizikis institutis Cʻentraluri seismuri sadguri, Oct.-Dec. 1939-