National classification of occupations:   Occupational titles with draft definitions 

 - New Delhi:   Ministry of Labour and Employment,  1959 
 - 525p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification 
<br/><br/><label>Subjects--Index Terms: </label>Occupation 
<br/><br/><label>Universal Decimal Class. No.: </label>331.7.001(540)  / J9