01230cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001900092040004500111050002200156051001700178086001600195100004600211245032800257260004800585300006200633410005500695500004300750504003000793650003800823650005800861700004500919gs 56000164 DLC20260227111404.0761028s1956    dcuab    b   f000 0 eng c  ags 56000164   a(OCoLC)2536838  aU.S. Geol. Survey LibrarycNhDdISSdDLC00aQE75b.P9 no. 284  aQE203.H3bS50 aI 19.16:2841 aSimons, Frank S.q(Frank Stanton),d1917-10aGeology and ore deposits of the Zimápán mining district,bState of Hidalgo, Mexico,cby Frank S. Simons and Eduardo Mapes V. Prepared in cooperation with the Instituto Nacional para la Investigación de Recursos Minerales of Mexico, under the auspices of the Technical Cooperation Administration of the Dept. of State.  aWashington,bU.S. Govt. Print. Off.,c1956.  avi, 128 p.billus., maps, (part fold., part col.)c29 cm.20aGeological Survey (U.S.).tProfessional paperv284  aPart of illustrative matter in pocket.  aBibliography: p. 123-124. 0aGeologyzMexicozHidalgo (State). 0aMines and mineral resourceszMexicozHidalgo (State).1 aMapes Vázquez, Eduardo,ejoint author.