Pratt, Henry Reginald Clive,  1911-2007. <br/><br/>
Countercurrent separation processes / 
H. R. C. Pratt. 
 - New York:  Elsevier Publishing Co  1967. 
 - xxii, 538 p.   22 1/2 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Separation Technology
<br/><br/><label>LC Class. No.: </label>TP156.S45