{"id":"000002889","type":"book","title":"Guidebook for the nineteenth annual Tri-State Geological Field Conference: west central Illinois, Oct. 15 and 16, 1955 ... Canton, Illinois/ by Harold R. Wanless.- Urbana, IL: Univ., Dep. of Geology.- 34 S.: 14 Ill. (z.T. gef.)","author":[{"family":"Wanless","given":"Harold R."}],"issued":{"raw":"1955"}}