000 00967n a2200265 4500
001 00949140
003 PWmBRO
005 20180324071607.0
008 910713s1990 dcua b f00010 eng
010 _a 90001743
069 _a 91035019
090 0 0 _aVF
_b622.8/2/C778i
100 1 0 _aCooper, W. E.
_q(Wade Emanuel),
_d1955-
245 1 0 _aInternational intercalibration and intercomparison program radon daughter measurements :
_bexercise at the Twilight Mine, Uravan, CO /
_cby W.E. Cooper and R.F. Holub.
260 0 _aWashington, D.C. :
_bU.S. Dept. of the Interior, Bureau of Mines,
_c1990.
300 _a13 p. :
_bill.
490 1 _aInformation circular ;
_v9257
650 0 _aMine gases
_zColorado
_zTwilight Mine
_xMeasurement.
650 0 _aRadon
_xIsotopes
_xMeasurement.
700 1 0 _aHolub, Robert F.
830 0 _aInformation circular (United States. Bureau of Mines) ;
_v9257
942 _2ddc
992 0 2 _a2 copies.
994 0 2 _a080221
_b080222
999 _c62424
_d62424