Report of the study group for heavy chemicals. 

 - Delhi  Manager of Publications.       1968 
 - "v, 68p"  cm. 
<br/><br/><label>Standard No.: </label>175222 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X9(E):92.N67t, K8"