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

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