Basson, A. H. <br/><br/>
Introduction to symbolic logic / 
A. H. Basson, D. J. O'Connor 
 - 3rd ed.  
 - London :  Tutorial,  1959 [Reprinted 1970] 
 - viii, 175 p. ;  18 cm. 
<br/><br/>Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical
<br/><br/><label>Dewey Class. No.: </label>511.3  / BAI 1970