Zapiski po gidrografii, izdavaemye Glavnym gidrograficheskim upravleniem. Vypusk XXKhI . 1909 god./Hydrographic Notes issued by the Directorate General of Hydrography. Issue XXXI. 1909. In Russian (ask us if in doubt) - landofmagazines.com

TransliterationZapiski po gidrografii, izdavaemye Glavnym gidrograficheskim upravleniem. Vypusk XXKhI . 1909 god.

In EnglishHydrographic Notes issued by the Directorate General of Hydrography. Issue XXXI. 1909. In Russian (ask us if in doubt)

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