Upgrading to windows 3.1. 

 - xv, 297 pages :   illustrations ;   24 cm 
<br/><br/><label>ISBN: </label>0880229659 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Windows (Computer programs)
<br/><br/><label>Dewey Class. No.: </label>005.43