{"id":"000027964","type":"book","title":"Research and service of the Illinois State Geological Survey.- Urbana, IL.- 24 S.: Ill","container-title":"Illinois State Geological Survey <Urbana-IL>: annual report of the Department of Registration and Education; July 1, 1967 - June 30, 1968","author":[{"family":"Frye","given":"John C."}],"issued":{"raw":"1969"}}