En
RuBulletin of the Academy of Sciences of the Soviet Union. Series 6. Leningrad, 1907-1927
Bulletin of the Academy of Sciences of the Soviet Union. Series 6. Leningrad, 1907-1927
- 1918
Izvestiya of the Academy of Sciences of the Union of Soviet Socialist Republics. Series 6. 1918. № 9. May 15. Izvestiya of the Russian Academy of Sciences. Series 6
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1918. № 9. May 15: Proceedings of the Russian Academy of Sciences. Series 6. Petrograd: Type. Ros. Acad. Sciences, 1918.
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Proceedings of the Academy of Sciences of the Union of Soviet Socialist Republics.Series 6.1918. № 11. June 15: Proceedings of the Russian Academy of Sciences.Series 6. Petrograd: Type.Ros.Acad.Sciences, 1918.