Campbell, Mary. <br/><br/>
1-2-3 :  the pocket reference / 
by Mary Campbell. 
 - 2nd ed. 
 - New York, N.Y. :  McGraw-Hill,  1990. 
 - v, 214 p. ;  18 cm. 
<br/><br/><label>ISBN: </label>0078817021 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer programs.