Strom, D J <br/><br/>
The four principles of external radiation protection: time, distance, shielding and decay.  [electronic resource] 

 -  Health physics  Mar 1988 
 - 353-4 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0017-9078 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radiation Protection