Research needs for radiation protection. 

 - Bethesda, Md. :  NCRP,  1993. 
 - xi, 84 p. 
 - Report, no.<117> .
 - Estados Unidos. National council on radiation protection and measurements .
 - Report, no.<117> .
<br/><br/> Recommendations of the NCRP  Bibliografía: p.55-60 
<br/><br/><label>ISBN: </label>0929600320 
<br/><br/><label>ISSN: </label>0083209X 
<br/><br/><label>Standard No.: </label>NCRP-REPORT-117