01080cam a22003131 4500 l 53000009 DLC 20260227111543.0 760308s1953 sz a 000 0 eng l 53000009 (OCoLC)2036885 DLC LU OCoLC DLC premarc HD7801 .I67 no. 33, etc. 622.8 International Labour Office Safety in coal mines. [Rev. and enl. ed.] Geneva, 1953-55. 2 v. tables. 24 cm. Its Studies and reports, new ser., no. 33 Previous ed. issued in 1939 under title: Safety provisions for underground work in coal mines. Bibliography: v. 1, p. [262]-266. v.l. Organisation on the national and international levels.--v. 2. Legislation. Coal mines and mining Safety measures. Coal mine accidents. Mine inspection. International Labour Office. Studies and reports, new ser., no. 33. 36797 36797