Gregory, Paul A. <br/><br/>
Formal Logic / 
Paul A. Gregory 
 - Ontario, Canada :  Broadview Press,  [2017] 
 - xiii,  453 pages ;  23 cm 
<br/><br/> Minimal Level Cataloging Plus. 
<br/><br/><label>ISBN: </label>9781554812721 
<br/><br/><label>LCCN: </label>2017446386 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical--Textbooks.