Skorost' zvuka na poverkhnosti. Fevral'. Skorost' zvuka na poverkhnosti. Avqust. (to accompany) Atlas okeanov : Atlanticheskiy i Indiyskiy Okeany 1977.

2 Hydrological maps on 2 sheet. Showing speed of sound at the surface water in February and August in Atlantic and Indian Oceans. Include legend and color coded sound bar.
1974 - 1980. Three volumes produced by the USSR War Department =Ministerstvo oborony Sovetskogo Soyuza, with volumes on the Pacific Ocean= Tikhiy okean (1974), the Atlantic and Indian Oceans = Atlanticheskogo i Indiyskogo okeanov (1977), and the Arctic Ocean= Arkticheskiy sever led okeana (1980). This is 1977 Atlas of the Atlantic and Indian Oceans. Contains xiv pages of title, introduction, contents, legend, abbreviations and 306 pages of detailed thematic maps, including chapters with descriptive text in geomorphology, climate, hydrology, geology, topography, history of exploration, navigation and biology. Most maps are double page, some with inset maps, illustrations, and diagrams and graphs. Maps showing navigation routes, distance, boundaries and major ports. Relief shown by hachures and shadings. Depth shown by bathymetric tints, isolines and soundings. Prime meridian is Greenwich. Atlas includes 27 pages of index “Ukazatel’”, additional page of legend and abbreviation on separate sheet, and editorial board information dated “10.02.1977 g. Tirazh 25000 akz Zakaz No. 627” at the end. Paper dust jacket over hard cover with title in gilt on front cover and spine, and embossed USSR coat of arms on front cover.