ISBN 0-8014-4273-7* الجمعية الجغرافية الفرنسية* الجمعية الجغرافية الملكية* Official website* The contribution of the Russian Geographical Society into the history of the ocean studies
ISBN 0-8014-4273-7==See also==*List of Russian explorers==References====External links==*Official website*The contribution of the Russian Geographical Society into the history of the ocean studies