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Letters of A. von Humboldt, written between the years 1827 and 1858, to Varnhagen von Ense. ... Authorized translation from the German, with explanatory notes and a full index of names
Alexander von Humboldt
出版1860
URLhttp://books.google.com.hk/books?id=caZcAAAAcAAJ&hl=&source=gbs_api
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