The world coal-mining industry ... 

 - Geneva,  1938. 
 - 2 v.  tables, diagrs. (part fold.)  24 cm. 
 - Its Studies and reports, Series B (Economic conditions)  no. 31 .
 - International Labour Office.  Studies and reports, Series B (Economic conditions)  no. 31. .
<br/><br/> At head of title: International labour office ...  "Originally prepared and distributed in proof as a 'white' report, intended to serve as a basis for discussion at the Technical tripartite conference on the coal-minimg industry ... in Geneva in May 1938." 
<br/><br/>v. 1. Economic conditions.-- v. 2. Social conditions. 
<br/><br/><label>LCCN: </label>l  39000015  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining.<br/>Coal miners.<br/>Coal trade.
<br/><br/><label>LC Class. No.: </label>HD4813  / .I4 ser. B, no. 31