Bargar, K. E.     Hydrothermal Mineralogy of Core from geothermal drill holes at Newberry volcano, Oregon [Текст] / K.E. Bargar, T.E.C. Keith // U.S. Geological survey professional paper. N 1608 / Geological survey ; U.S.Department of the interior, U.S. Geological survey - Washington : Government printing office , 1999. — VII, 92p.