Lewis, Clarence Irving,  1883- <br/><br/>
Symbolic logic / 
by Clarence Irving Lewis and Cooper Harold Langford 
 - 2nd ed. 
 - New York :  Dover Publications,  c1959 
 - viii, 518 p. :  ill., digr. ;  21 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0486601706 (pbk) :  USD 6.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical
<br/><br/><label>Dewey Class. No.: </label>164