{"id":"000028370","type":"book","title":"A late-glacial pollen diagram from Madelia, South-Central Minnesota. - New Haven, CT","container-title":"American journal of science ; 260.1962, S. 522-529 : 1 Ill. ; 2 Tab","author":[{"family":"Jelgersma","given":"Saskia"}],"issued":{"raw":"1962"}}