Martin, E. J. <br/><br/>
Fluctuations of breath radon in subjects seated at rest. 

 - Chalk River :  AECL,  1953. 
 - v. 8 p. 574-581 
<br/><br/><label>ISSN: </label>0067-0367 
<br/><br/><label>Standard No.: </label>AECL-84