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4689 1 (1905)

handle is hein.usccsset/usconset30482 and id is 1 raw text is: 





58ni(osue R. I HOU SE OF RERllES ENTATIV ES. I4 DecuiE
  d                                      No. 771.


Bulletin No. 237


Senies  B, Deriptive Ge ology, 43 *
    D, Petrography and Mineralogy, 29


     DEPARTMENT OF TIE INTERIOR

UNITED STATES  GEOLOGIC'AL SURVEY
        CHARLES D). WALCOTT ), DRECTOR




PETIROGRAPI-Y AiN1) GEOLOGY

               OF TITE

    IGNiOUS ROCOFKS


lilGHW()OOD MONTAINS, 31I)NTANA


                       BY


       :LOU1IS VALE1,NTI1NE ITiSSON


       WA SilNG''ON
GOVERNMP1'NT PRINTING OFFICE
            1. 1) ()'0

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