Bentley K W <br/><br/>
Natural pigments 

 -  1960 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>37260 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Netural pigments<br/>Chemistry
<br/><br/><label>Dewey Class. No.: </label>E9:95, K0