Porter  <br/><br/>
Tutorial, analytical and graphical (TAG) software  
/ Tod S. Porter and Teresa M. Riley. 
 - New York  Harcourt Brace  1996. 
 - 2 diskett 
<br/><br/><label>ISBN: </label>0030084598  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>330 POR 1996