Coal Mines Committee    Record of the third session 

 - Geneva  ILO         1951 
 - "iv, 116p."  cm. 
<br/><br/> Appendix p 89-116. 
<br/><br/><label>Standard No.: </label>88849 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X9(HZ551):9.1.N49t, J1/UN"