{"id":"000029462","type":"book","title":"Pollen analysis at the Thaller Mastodon Site, Gratiot County, Michigan. - Ann Arbor, MI","container-title":"The Michigan botanist ; 8.1969, S. 3-10 : 2 Ill. ; 1 Tab","author":[{"family":"Held","given":"Edith R."}],"issued":{"raw":"1969"}}