Basson, A.H. <br/><br/>
Introduction to sumbolic logic 
A.H. Basson and J.J. O'Connor 
 - 3rd ed. 
 - London  University Tutorial Press  1959  
 - viii,175p.;  19cm. 
<br/><br/><label>Dewey Class. No.: </label>511.3  / BAS