{"id":"000026818","type":"book","title":"Alte und neue Formen der Goldgewinnung am Rio Telembi (Kolumbien).- Frankfurt a.M","container-title":"Die Umschau in Wissenschaft und Technik; 1953, no.21, 3 S.: 10 Ill.; 1 Kt","author":[{"family":"Wilhelmy","given":"Herbert"}],"issued":{"raw":"1953"}}