{"id":"000030857","type":"book","title":"Argillite of Michigan : a preliminary projecile point classification and temporal placement from surface materials. - Ann Arbor, MI","container-title":"Papers of the Michigan Academy of Science, Arts and Letters ; 48.1963, S. 557-566 : 2 Ill","author":[{"family":"Peske","given":"G.R."}],"issued":{"raw":"1963"}}