Wu, Kathleen Johnson. <br/><br/>
Discovering formal logic / 
Kathleen Johnson Wu. 
 - Guilford, Conn. :  Dushkin Pub. Group,  c1994. 
 - xiv, 529 p. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>1561342335 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.
<br/><br/><label>LC Class. No.: </label>BC71 / BC138  / .W8 1994 
<br/><br/><label>Dewey Class. No.: </label>160