Grady Roy I <br/><br/>
Chemist at work 
by Grady Roy I; Chittum John W 
 -  1940 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>74580 
<br/><br/><label>Source: </label> Textbook 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical
<br/><br/><label>Dewey Class. No.: </label>F, H0