{"id":"000027331","type":"book","title":"A pollen record from Arctic Alaska reaching glacial and Bering land bridge times. - London","container-title":"Nature ; 198.1963, no. 4880, S. 609-610 : 1 Ill. ; 1 Tab","author":[{"family":"Colinvaux","given":"Paul A."}],"issued":{"raw":"1963"}}