Hurley, Patrick J.,  1942- <br/><br/>
A concise introduction to logic / 
Patrick J. Hurley. 
 - 4th ed. 
 - Belmont, Calif. :  Wadsworth Publ. Co.,  1991. 
 - xii, 592 p. :  ill. ;  24 cm. 
 - 160 .
<br/><br/>Includes bibliogr. references and index. 
<br/><br/><label>ISBN: </label>0534145140 (free copy ed.) 0534145175 (student ed.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic
<br/><br/><label>Dewey Class. No.: </label>160