Funk Wilfred <br/><br/>
30 Days to more powerful vocabulary 
WILFRED FUNK AND NORMAN LEWIS 
 - New delhi:  Goyal publishers and distributor;  2013. 
 - 235p. 
<br/><br/><label>ISBN: </label>9788183070027 
<br/><br/><label>Dewey Class. No.: </label>428.1  / FUN/D