Symbolic logic 
Copi, Irving M. 
 - fifth edition. 
 -  Macmillan Publishing Co., Inc.  1979 
 - xiii, 398 pages. 
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<br/><br/><label>ISBN: </label>0-02-324980-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and Mathematical.
<br/><br/><label>Dewey Class. No.: </label>GS 160 C79s 1979