7225197
9781108004619
von Humboldt, Alexander is the author of 'Letters of Alexander von Humboldt: Written between the Years 1827 and 1858, to Varnhagen von Ense; Together with Extracts from Varnhagen's Diaries, and ... (Cambridge Library Collection - History)', published 2009 under ISBN 9781108004619 and ISBN 110800461X.
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