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1
المؤلفون: Akademii Nauk SSSR, Academy of Sciences, St. Petersburg, Islenevym, Ivan, Sergeev, U.L., Kuvakin, I., Imperial Academy of Sciences
جغرافية الموضوع: Russia, St Petersburg, Siberia (Russia)
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2
المؤلفون: Akademii Nauk SSSR, Academy of Sciences, St. Petersburg, Imperial Academy of Sciences, Islenevym, Ivan, Sergeev, U.L.
جغرافية الموضوع: Russia, Kazakhstan, St Petersburg