{"id":"001030836","type":"book","title":"Altersbestimmung der Fundhorizonte nach der C14-Methode","publisher":"Stämpfli","publisher-place":"Bern","pages":"88-91","container-title":"Birsmatten-Basisgrotte : Eine mittelsteinzeitliche Fundstelle im unteren Birstal","author":[{"family":"Gfeller","given":"Christian"}],"issued":{"raw":"1963"}}