000			01118cam a22002418a 4500
020			_a0607870435
040			_cDLC
082	0	0	_a551 FOR 1997 A059 Or.
100	1		_aHinkle, Stephen R.
245	1	0	_aComparison of chlorofluorocarbon age-dating with particle-tracking results of a regional ground-water flow model of the Portland Basin, Oregon and Washington /
246	2		_aComparison of chlorofluorocarbon age dating with particle-tracking results of a regional ground-water flow model of the Portland Basin, Oregon and Washington
260			_aDenver, Colo. : _bU.S. Dept. of the Interior, U.S. Geological Survey : _bFor sale by Branch of Information Services [distributor], _c[1997]
300			_av, 47 p. : _bill., maps (some col.) ; _c28 cm.
490	1		_aU.S. Geological Survey water-supply paper ;
500			_aShipping list no.: 97-0374-P.
650		0	_aGroundwater flow
650		0	_aGroundwater tracers
650		0	_aChlorofluorocarbons
700	1		_aSnyder, Daniel T.
710	2		_aIntergovernmental Resource Center of Clark County (Wash.)
710	2		_aGeological Survey (U.S.)
942			_cEK
999			_c14579 _d14579