Kaufman, Lenard,  1913- <br/><br/>
Diminishing return / 

 - 1st ed.] 
 - Garden City, N.Y.,  Doubleday,  1951. 
 - 285 p.  21 cm. 
<br/><br/>includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Rate of return.<br/>.Advertising.
<br/><br/><label>Dewey Class. No.: </label>659.1  / KAD 1951