Sayers Anthony P <br/><br/>
Operation systems survey   

 - New York    Petrolelli Charer          1971 
 - vii,366p. 
 - Petrocelli charter computer sceince series .
<br/><br/><label>Standard No.: </label>140820 
<br/><br/><label>Source: </label> General Books 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMICS
<br/><br/><label>Dewey Class. No.: </label>X:89M0bD65,(B), L1