Day, Harvey <br/><br/>
Thirty days to a super-power vocabulary / 
by Harvey Day 
 - Preston :  A. Thomas,  1963 
 - 301 p. ;  19 cm. 
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 295-296 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Glossaires, vocabularies<br/>English language--Dictionaries<br/>English etymology
<br/><br/><label>Dewey Class. No.: </label>423