DUFFY, TIM <br/><br/>
FOUR SOFTWARE TOOLS 

 - CALIFORNIA  WPC  1991 
 - WADSWORTH SERIES IN COMPUTER INFORMATION SYSTEMS .
<br/><br/> BR-74 
<br/><br/><label>ISBN: </label>NCST  50.3 
<br/><br/><label>Dewey Class. No.: </label>836