00620cam a22002171 4500 l 22000086 DLC 20260227111528.0 841203s1920 sz 100 0 eng l 22000086 (OCoLC)29621087 DLC MnU DLC HD4813 .I4 Ser. A no. 7 International Labour Office. The miners' international. (Geneva, 2nd to 6th August, 1920). [Geneva, 1920]. 14 p. 25 cm. Coal miners. International Federation of Miners. Labor unions Congresses. 35607 35607