{"id":"000029613","type":"book","title":"Twenty-five years of radiocarbon dating : the longlasting bristlecone pine are being used to correct radiocarbon dates. - Easton, PA","container-title":"American scientist ; 26.1974, S. 553-560 : 5 Ill","author":[{"family":"Ralph","given":"Elizabeth K."}],"issued":{"raw":"1974"}}