Tin Deposits of Durango Mexico
GEOLOGICAL SURVEY BULLETIN 962-D
Tin Deposits of Durango Mexico
By WARD C. SMITH, KENNETH SEGERSTROM, and REINALDO GUIZA, JR.
GEOLOGICAL SURVEY BULLETIN 962-D
Prepared in cooperation with the Universi- dad National Autonbma de Mexico, Ins- tituto de Geologia, and the Comite Directivo para la Investigation de los Recursos Mine- rales de Mexico under the auspices of the Interdepartmental Committee on Scientific and Cultural Cooperation, Department of State
UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1950 UNITED STATES DEPARTMENT OF THE INTERIOR
Oscar L. Chapman, Secretary
GEOLOGICAL SURVEY
W. E. Wrather, Director
For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. CONTENTS