Alexander von Middendorff

von Middendorff circa 1880 Alexander Theodor von Middendorff (; tr. ; 18 August 1815 – 24 January 1894) was a Russian zoologist and explorer of Baltic German and Estonian extraction. He is known for his expedition 1843–45 to the extreme north and east of Siberia, describing the effects of permafrost on the spread of animals and plants. Provided by Wikipedia
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