The international standardisation of labour statistics /    
ILO 
 - Geneva :   International Labour Office.,   1959. 
 - v, 121 p. ;    24 cm. 
 - Studies and reports, new ser;   no. 53 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Working class --------Statistics.