Hougen, Olaf A. . <br/><br/>
Chemical Process Principles Charts /  Textual Documents 
Olaf A. Hougen. 
 - 1st ed / 
 - New York :  John Wiley & Sons ,  1946. 
 - 219p ;  28 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Chemistry T/G-Chemistry 
<br/><br/><label>Dewey Class. No.: </label>540  / H 814 C