Davis, T. H. <br/><br/>
Intercomparison of North American radon progeny measurement methods and eequipment /by T.H. Davis and R.F. Holub. 

 - Pittsburgh, PA :  U.S. Dept. of the Interior, Bureau of Mines,  1989. 
 - 7 p. 
 - Report of investigations ;  9229. .
 - Report of investigations (United States. Bureau of Mines);  9229. .
<br/><br/><label>LCCN: </label>90055106     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines gases--Measurement.--North America<br/>Radon--Isotopes--Measurement.