GODFREY, Richard <br/><br/>
Stream dispersion at selected sites / 
by Richard G. Godfrey and Bernard J. Frederick. 
 -- Washington :   United States Government Printing Office,   1970 
 - 38 p. -- 
 (Geological Survey Professional Paper  ;  433-K).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radiactividad<br/>Radionúclidos
<br/><br/><label>Universal Decimal Class. No.: </label>539.163