Hamilton, Warren 1925-2018 Geology and petrogenesis of the Island Park Caldera of Rhyolite and Basalt Eastern Idaho / by Warren Hamilton. -- Washington : United States Government Printing Office, 1965 - 37 p. -- (Geological Survey Professional Paper ; 504-C). Subjects--Topical Terms: IdahoPetrologíaRocas Universal Decimal Class. No.: 552(796)