Barth 1857, p. 282 Vol. 3. Barth, Heinrich (1857), Travels and discoveries in North and Central Africa: Being a journal of an expedition undertaken under the auspices of H.B.M.'s government, in the years 1849-1855. (3 Vols), New York: Harper & Brothers. Google books: Volume 1, Volume 2, Volume 3.
Barth 1857, p. 282 Vol. 3. Barth, Heinrich (1857), Travels and discoveries in North and Central Africa: Being a journal of an expedition undertaken under the auspices of H.B.M.'s government, in the years 1849-1855. (3 Vols), New York: Harper & Brothers. Google books: Volume 1, Volume 2, Volume 3.