Waldvogel, Traugott Reisebilder aus dem Kaukasus / Traugott Waldvogel. - Schaffhausen : Schoch, 1897. - 155 pages ; 20 cm. - 910.4(47.9) (NLA) . Subjects--Geographic Terms: Caucasus --Description and travel Universal Decimal Class. No.: 910.4(47.9) (NLA)