01170cam a22002891  4500001001300000003000400013005001700017008004100034010001700075035001900092040002600111042001200137050003100149110003200180245003900212260001900251300004800270490006800318500005400386500021000440505005800650650002700708650001700735650001600752810009500768999001700863l  39000015 DLC20260227111536.0781101s1938    sz a          001 0 eng    al  39000015   a(OCoLC)4337002  aDLCcCoDUdOCoLCdDLC  apremarc00aHD4813b.I4 ser. B, no. 312 aInternational Labour Office14aThe world coal-mining industry ...  aGeneva,c1938.  a 2 v.btables, diagrs. (part fold.)c24 cm.1 aIts Studies and reports, Series B (Economic conditions)vno. 31  aAt head of title: International labour office ...  a"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."0 av. 1. Economic conditions.-- v. 2. Social conditions. 0aCoal mines and mining. 0aCoal miners. 0aCoal trade.2 aInternational Labour Office.tStudies and reports, Series B (Economic conditions)vno. 31.  c36283d36283