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Keywords from Image Description:
IRGO founders . en The founding members of the Russian Geographical Society Friedrich Georg Wilhelm Vasily von Struve Adam Johann Ivan von Krusenstern Ferdinand von Wrangel Karl Ernst von Baer Gregor von Helmersen Peter Pyotr von Kppen Pyotr Rikord Pyotr SemyonovTyanShansky Istoriya poluvekovoy deyatel'nosti Imperatorskogo Russkogo