Exposure  to radiation from the natural radioactivity in building materials :  report / 
by a Group of Experts of the OECD Nuclear Energy Agency 
 - Paris :  OECD,  1979 
 - 34 p. ;  24 cm. 
<br/><br/> 'May 1979' 
<br/><br/>Includes bibliographical references (p.30-33) 
<br/><br/><label>ISBN: </label> Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radioactivity--Measurement<br/>Building materials