Hurley, Patrick J.,  1942- <br/><br/>
A concise introduction to logic / 
Patrick J. Hurley 
 - 4th ed. 
 - Belmont, Calif. :  Wadsworth,  1991 
 - xii, 596 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0534145140 
<br/><br/><label>LCCN: </label>90-033885 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic