{"id":"001196703","type":"book","title":"Spatial, species, and temporal variations in the 13C/12C ratios of C3 plants: implications for palaeodiet studies","publisher":"Academic Press","pages":"637-649","container-title":"Journal of Archaeological Science, 26,6 (1999","author":[{"family":"Heaton","given":"Tim H. E."}],"issued":{"raw":"1999"}}