Perry, William E <br/><br/>
Managing systems maintenance  

 - Wellesley;   QED Information Science Inc,  1981 
 - 372p. 
<br/><br/><label>ISBN: </label>0-89435-046-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Management 
<br/><br/><label>Universal Decimal Class. No.: </label>D 681.3:65.01  / M1