00867cam a22002411  4500001001300000003000400013005001700017008004100034010001700075035001900092040002700111043001200138050002200150051001600172100003200188245012200220260004800342300007600390490004800466500002600514650004000540700004500580gs 35000277 DLC20260227111340.0760206s1935    dcu          f000 0 eng    ags 35000277   a(OCoLC)1971244  aDLCcIDeKNdOCoLCdDLC  an-us-co00aQE75b.B9 no. 843  aQE92.S3bC71 aCross, Whitman,d1854-1949.12aA brief review of the geology of the San Juan region of southwestern Colorado,cby Whitman Cross and Esper S. Larsen.  aWashington,bU.S. Govt. print. off.,c1935.  avi, 138 p.b16 pl. (part fold. incl. maps (2 in pocket) diagrs.c23 cm.0 aU.S.  Geological survey.  Bulletinvno. 843  a"Literature": p. 4-6. 0aGeologyzColoradozSan Juan Region.1 aLarson, Esper Signius,d1879-ejt. auth.