000			01379cam a22003251 4500
001			gs 54000292
003			DLC
005			20260227111402.0
008			780708s1953 dcuabd b f000 0 eng
010			_ags 54000292
035			_a(OCoLC)4032119
040			_aDLC _cOClU _dISS _dOCoLC _dDLC
042			_apremarc
050	0	0	_aQE75 _b.P9 no. 245
051			_aTN490.T9 _bL6 _cCopy 2.
082			_a553.46
086	0		_aI 19.16:245
100	1		_aLovering, T. S. _q(Thomas Seward), _d1896-1991.
245	0	0	_aGeology and ore deposits of the Boulder County tungsten district, Colorado, _cby T. S. Lovering and Ogden Tweto. [Prepared in cooperation with the State of Colorado through the Colorado Geological Survey board and the Colorado Metal Mining Fund]
260			_aWashington, _bU.S. Govt. Print. Off., _c1953.
300			_aviii, 199 p. _billus., maps, diagrs., plans, tables. _c29 cm.
410	2	0	_aGeological Survey (U.S.). _tProfessional paper, _v245
500			_aPart of the illustrative material is folded, part colored, part in pocket.
504			_a"List of references": p. 192-196.
650		0	_aGeology _zColorado _zBoulder County
650		0	_aPetrology _zColorado _zBoulder County
650		0	_aTungsten ores _zColorado _zBoulder County
650		0	_aTungsten mines and mining _zColorado _zBoulder County
700	1		_aTweto, Ogden, _d1912-1983, _ejoint author.
999			_c28905 _d28905