Maintainging the product portfolio:  the commerical development concept/ 
American Mangement Association. Research and Development Division 
 - NewYork:  American Mangement Association,  c1960 
 - 87 p.;  23 cm. 
 - American Management Association Management Report  no. 42 .
<br/><br/> Based mainly on presentations at 1989-60 conference of AMA's Research and Development Division 
<br/><br/><label>ISBN: </label> $ 2.25 
<br/><br/><label>Subjects--Topical Terms: </label><br/>New products--Management<br/>Marketing research<br/>Commerical development
<br/><br/><label>Dewey Class. No.: </label>658.57