Basics of logic 
Meer, Thelma Q. 
 -  Trinitas Publishing, Inc.  2004 
 - 163 pages. 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71420431-3 
<br/><br/><label>Dewey Class. No.: </label>F 160 M47b 2004