Barron, D. W. (David William), 1935- <br/><br/>
Computer operating systems 
D. W. Barron 
 - London  Chapman & Hall  1971 
 - viii, 135 p. ; 23 cm. 
<br/><br/><label>ISBN: </label>0412090104 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)