Clifton, Roy Henry. <br/><br/>
Principles of planned maintenance / 
R.H. Clifton. 
 - London :   Edward, Arnold,    1974. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0713133171 
<br/><br/><label>LC Class. No.: </label>TS 192 CLI 1974