Wallenstein, Gerd D. <br/><br/>
Concept and practice of product planning 
by Gerd D. Wallenstein 
 - N.Y.  AMA  1968 
 - 127p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrail Management
<br/><br/><label>Dewey Class. No.: </label>T25 Am35c