TransliterationRykachev M. Otchet po Nikolaevskoy glavnoy fizicheskoy observatorii za 1903 g. Predstavlennyy Imperatorskoy Akademii Nauk M. Rykachevym.
In EnglishRykachev M. Report on the Nikolaev Main Physical Observatory for 1903, submitted to the Imperial Academy of Sciences by M. Rykachev. In Russian (ask us if in doubt)
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