{"id":"000026837","type":"book","title":"Vorgeschichtliche Felsgravierungen in Venezuela.- Frankfurt a.M","container-title":"Die Umschau in Wissenschaft und Technik; 1956, No.15, S.456-458: 11 Ill.; 1 Kt","author":[{"family":"Zerries","given":"Otto"}],"issued":{"raw":"1956"}}