{"id":"000029348","type":"book","title":"Problems of radiocarbon dating of raised beaches, based on experience in Spitsbergen. - Oslo","container-title":"Norsk geografisk tidsskrift ; 18.1961-1962, no. 1-2, 18 S. : 9 Ill. ; 1 Tab","author":[{"family":"Olsson","given":"Ingrid"}],"issued":{"raw":"1961"}}