{"id":"001013046","type":"book","title":"Radiocarbon in atmospheric carbon dioxide and methane: global distribution and trends","publisher":"Springer (Iulius Springer)","publisher-place":"New York/Berlin/Heidelberg","pages":"503-518","container-title":"Radiocarbon after four decades : An interdisciplinary perspective","author":[{"family":"Levin","given":"Ingeborg"}],"issued":{"raw":"1992"}}