Methods of labour productivity statistics 

 - Geneva  ILO         1951 
 - "iv,136p"  cm. 
 - Studies and reports;no.18 .
<br/><br/> Appendix: 124-136P 
<br/><br/><label>Standard No.: </label>187581 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X:9.1.N51s, J1/UN"