Funk, Wilfred. <br/><br/>
30 days to a more powerful vocabulary / 
Wilfred Funk. 
 - [S.l.] :  Pocket,  1981. 
 - 1 v. (unpaged) ;  18 cm. 
<br/><br/> Paperback. 
<br/><br/><label>ISBN: </label>0671436767 9780671436766