Young, Edward Joseph 1907-1968 Jasperoids of the lake valley mining district, New Mexico / by E. J. Young and T. G. Lovering. -- Washington : United States Government Printing Office, 1966 - 27 p. -- (Geological Survey Bulletin ; 1222-D). Subjects--Topical Terms: GeologíaNew Mexico Universal Decimal Class. No.: 55(789)