Simpson R L <br/><br/>
Essentials of symbolic logic. 

 - London  Routledge         1988 
 - iv,193p.  cm. 
<br/><br/><label>Standard No.: </label>44578 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>R14, M8