Scintillation counters for geologic use / 
by W. W. Vaughn...[et al.]. 
 -- Washington :   United States Government Printing Office,   1959 
 - P. 213-240. -- 
 (Geological Survey Bulletin  ;  1052-F).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geofísica
<br/><br/><label>Universal Decimal Class. No.: </label>550.3