Godfrey W. Herweg <br/><br/>
Radios niche marketing revolution:  futuresell 
Godfrey W. Herweg 
 - 1st. 
 - Boston  Focal Press  1997 
<br/><br/><label>ISBN: </label>9780240802022 
<br/><br/><label>Dewey Class. No.: </label>659.14  / 353