Letters of Alexander Von Humboldt, Written Between the Years 1827 and 1858, to Varnhagen Von Ense: Together With Extracts from Varnhagen's Diaries, and Letters from Varnhagen and Others to Humboldt

Letters of Alexander Von Humboldt, Written Between the Years 1827 and 1858, to Varnhagen Von Ense: Together With Extracts from Varnhagen's Diaries, and Letters from Varnhagen and Others to Humboldt