Model code of safety regulations for underground work in coal mines for the guidance of govt. and of the coal mining Industry 

 - Geneva  ILO         1950 
 - "ix, 102p."  cm. 
<br/><br/><label>Standard No.: </label>88860 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minings
<br/><br/><label>Dewey Class. No.: </label>"X9(HZ551):94.1.N3, J0/UN"