000200506 000__ 01530mam\a2200385\a\4500 000200506 001__ 200506 000200506 005__ 20220217103933.0 000200506 007__ heubmb024bbca 000200506 008__ 921203s1991\\\\couab\\\bb\\\f000\0\eng\d 000200506 035__ $$a(OCoLC)ocm27056470 000200506 035__ $$9AAX0423SI 000200506 035__ $$a200506 000200506 040__ $$aGPO$$cGPO 000200506 043__ $$an-us-co 000200506 049__ $$aISEA 000200506 074__ $$a0624-H (MF) 000200506 0860_ $$aI 19.76:91-313-A 000200506 1001_ $$aYager, Douglas B. 000200506 24510 $$aCaldera-related lava flows and intrusions of the south-central San Juan Mountains, Colorado$$h[microform] :$$banalytical data /$$cby Douglas B. Yager, Peter W. Lipman and David A. Sawyer. 000200506 260__ $$aDenver, Colo. :$$bU.S. Geological Survey ;$$bBooks and Open-File Reports Section [distributor],$$c1991. 000200506 300__ $$a19 leaves :$$bill., maps ;$$c28 cm. 000200506 4901_ $$aOpen-file report ;$$v91-313 000200506 500__ $$aCover title. 000200506 500__ $$aDistributed to depository libraries in microfiche. 000200506 500__ $$aShipping list no.: 92-2162-M. 000200506 504__ $$aIncludes bibliographical references (leaf 11). 000200506 533__ $$aMicrofiche.$$b[Denver, Colo. :$$cU.S. Geological Survey,$$d1992]$$e2 microfiches : negative. 000200506 650_0 $$aCalderas$$zSan Juan Mountains (Colo. and N.M.) 000200506 650_0 $$aVolcanic ash, tuff, etc.$$zSan Juan Mountains (Col. and N.M.) 000200506 650_0 $$aIntrusions (Geology)$$zSan Juan Mountains (Col. and N.M.) 000200506 7001_ $$aLipman, Peter W. 000200506 7001_ $$aSawyer, David A. 000200506 7102_ $$aGeological Survey (U.S.) 000200506 830_0 $$aU.S. Geological Survey open-file report ;$$v91-313. 000200506 85230 $$bdfich$$hI 19.76:$$i91-313-A 000200506 909CO $$ooai:library.usi.edu:200506$$pGLOBAL_SET 000200506 948__ $$ac:jf 000200506 980__ $$aBIB 000200506 980__ $$aGOV RESOURCE