Whiting Percy H <br/><br/>
Five great rules of selling 

 -  1947 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Salesmanship
<br/><br/><label>Dewey Class. No.: </label>X:514, H7-H7;1