The world coal-mining industry / 
International Labour Office 
 - United Kingdom:  P.S. King & sons,  1938. 
 - 258 p. :  Ill.;  24 cm. 
 - Studies and reports, Series B (Economic conditions) ;  no. 31 .
 - 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>Subjects--Topical Terms: </label><br/>Coal mines and mining.<br/>Coal miners.<br/>Coal trade.
<br/><br/><label>Dewey Class. No.: </label>622.334   / INW 1938