000			01143cam a22002891 4500
001			gs 50000051
003			DLC
005			20260227111356.0
008			801205s1949 dcuab b f001 0 eng c
010			_ags 50000051
035			_a(OCoLC)7003435
040			_aU.S. Geol. Survey. Libr. _cNcGrE _dOCoLC _dDLC
042			_apremarc
043			_an-us-co
050	0	0	_aQE75 _b.P9 no. 219
051			_aTN24.C2 _bE25 _cCopy 2.
082			_a557.88
100	1		_aEckel, Edwin Butt, _d1906-
245	1	0	_aGeology and ore deposits of the La Plata district, Colorado, _cby Edwin B. Eckel with sections by J. S. Williams, F. W. Galbraith and others. Prepared in cooperaton with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund.
260			_aWashington, _bU.S. Govt. Print. Off., _c1949.
300			_avii, 179 p. _billus., maps. _c29 cm.
410	2	0	_aGeological Survey (U.S.). _tProfessional paper _v219
500			_aPart of illustrative matter folded in pocket.
504			_aBibliographical footnotes.
650		0	_aGeology _zColorado _zLa Plata district.
650		0	_aOre deposits _zColorado _zLa Plata district.
999			_c28437 _d28437