Pactitis, S. A. <br/><br/>
Quattro Pro for Windows inside and out 
Stephen Cobb, Bryan Pfaffenberger. 
 - Boca Raton  CRC Press  c2008. 
 - 274 p.  ill.  25 cm. 
<br/><br/>Includes bibliographical references(p. 269-270)  and index. 
<br/><br/><label>ISBN: </label>1420054767 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric filters, Active--Design and construction.