Das, Ramaprasad <br/><br/>
Logic of truth functions :  an introduction to symbolic logic / 
Ramaprasad Das 
 - Calcutta :  Firma KLM,  c1964 
 - xix, 368 p. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> Rs. 15.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic mathematical<br/>Truth-functions
<br/><br/><label>Dewey Class. No.: </label>164