Allen, Robert. <br/><br/>
Using PFS:first choice  [Books]. 
Gail Todd. 
 - Osborne  McGraw-Hill  1989 
 - Pages: 462 
<br/><br/><label>ISBN: </label>0078815215  0.00 
<br/><br/><label>Dewey Class. No.: </label>QA/76.754  / TOD