Ionizing radiation   Levels and effects 

 - New  York United Nations       1972 
 -  "V1: Levels  (iv,197p)" .
<br/><br/><label>Standard No.: </label>68220 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>"C9B3,5:38, L2/UN"