Formal logic/ 
by John H Piet (ed.) 
 - New Delhi:  Cosmo,  2000. 
 - 286p. 
<br/><br/><label>ISBN: </label>9788177550108 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Formal Logic <br/>Mathematics<br/>Sciences
<br/><br/><label>Dewey Class. No.: </label>511.3  / JOH/F