{"id":"000025576","type":"book","title":"Astronomische Observatorien im nördlichen Maya-Gebiet.- Düsseldorf","container-title":"Sterne und Weltraum; 18.1979, No.6-7, S.196-201: 9 Ill. (1 Kt","author":[{"family":"Hartung","given":"H."}],"issued":{"raw":"1979"}}