Vohra,K.G. [et...al] ed., <br/><br/>
Natural radiation environment 

 - Delhi  Wjiley Eastern Limited  1982 
 - xi,691p.  HB  22cm. 
 - includes index .
<br/><br/><label>ISBN: </label>0852268890 
<br/><br/><label>Dewey Class. No.: </label>577.277  / NAT