000119704 000__ 01251cam\a2200325\a\4500 000119704 001__ 119704 000119704 005__ 20210513042657.0 000119704 008__ 840426s1986\\\\dcub\\\\\b\\\f000\0\eng\\ 000119704 010__ $$a 84600113 000119704 035__ $$a(OCoLC)ocm10753720 000119704 035__ $$a119704 000119704 040__ $$aDLC$$beng$$cDLC$$dGPO$$dOCLCQ$$dBTCTA$$dOCLCG$$dGBVCP$$dOCLCO 000119704 049__ $$aISEA 000119704 05000 $$aQE75$$b.B9 no.1619 000119704 074__ $$a0620 000119704 0860_ $$aI 19.3:1619 000119704 1001_ $$aSpencer, Frank Darwyn,$$d1904- 000119704 24510 $$aCoal geology and coal, oil, and gas resources of the Erie and Frederick Quadrangles, Boulder and Weld counties, Colorado /$$cby Frank D. Spencer. 000119704 260__ $$aWashington :$$bU.S. G.P.O.,$$c1986. 000119704 300__ $$av, 50 p. :$$bmaps ;$$c27 cm. +$$e7 maps. 000119704 4901_ $$aU.S. Geological Survey bulletin ;$$v1619 000119704 500__ $$aIssued in portfolio (28 cm.) with 7 folded maps in pocket. 000119704 504__ $$aIncludes bibliographical references (p. 37-38). 000119704 650_0 $$aCoal$$zColorado$$zBoulder County. 000119704 650_0 $$aCoal$$zColorado$$zWeld County. 000119704 650_0 $$aPetroleum$$zColorado$$zBoulder County. 000119704 650_0 $$aPetroleum$$zColorado$$zWeld County. 000119704 650_0 $$aNatural gas$$zColorado$$zBoulder County. 000119704 650_0 $$aNatural gas$$zColorado$$zWeld County. 000119704 830_0 $$aU.S. Geological Survey bulletin ;$$v1619. 000119704 85200 $$bgen$$hQE75$$i.B9$$ino.1619 000119704 909CO $$ooai:library.usi.edu:119704$$pGLOBAL_SET 000119704 980__ $$aBIB 000119704 980__ $$aBOOK