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