Microsoft (R) MS (tm) - DOS 
Mic rosoft Corporation. 
 - Rendmond, Washington :  Microsoft Corporationl,  c1986. 
 - various paging ;  25 cm. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Operating systems (Computers)
<br/><br/><label>Dewey Class. No.: </label>005.43