Happell, J. <br/><br/>
Chemical process economics 
/ J. Happell 
 - New York  John Wiley & Sons  1958 
 - xi, 291 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Process(law)
<br/><br/><label>Dewey Class. No.: </label>338.47661  / HAP