Johnson, D. L. <br/><br/>
Elements of logic via numbers and sets 
/ by D.L. Johnson 
 - London  Springer  1998 
 - ix,170p. 
<br/><br/><label>ISBN: </label>3540761233 
<br/><br/><label>Dewey Class. No.: </label>511.3  / JOH/E