Watson, E.R. . <br/><br/>
Colour in Relation to Chemical Constitution /  Textual Documents 
E.R.Watson. 
 - 1st ed. / 
 - New York :  Longmans Green & Co ,  1918. 
 - 197p. ;  22cm. 
<br/><br/><label>Subjects--Index Terms: </label>Chemistry Chemical Constitution G-Chemistry 
<br/><br/><label>Dewey Class. No.: </label>547  / W 332 C