Thomas, Edard <br/><br/>
Handbook for chemical patents  Edward Thomas. 

 - New York  Chemical Pub. Co.  1940 
 - ix, 260p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patents Chemistry technical Chemical engineering.
<br/><br/><label>Dewey Class. No.: </label>660.272  / T36H