Ice bulletin for the Gulf of Finland and the Baltic Sea. 1930. 24. December 20
Ice bulletin for the Gulf of Finland and the Baltic Sea
1930. 24. December 20: The Year of the ed. 5: Compiled from the icebreakers of the Leningrad Commercial Port and from the coastal posts of the USSR and from the summaries of Latvia, Finland, Sweden and Estonia: Icebreaking campaign of the Leningrad Commercial Port in the winter. - A type. Ch. geophysical. Observatory, 1930. -  p. : maps .. - Handwritten text.
I. Leningrad Commercial Sea Port. Territory (collection).
Source of electronic copy: PB Location of original: СЗ УГМС