01051cam a22003011  4500001001300000003000400013005001700017008004100034010001700075035001900092040002400111042001200135050003000147082001000177110003200187245002600219250002400245260002200269300002600291490004700317500009900364504003800463505008400501650004400585650002500629650002100654810007400675l  53000009 DLC20260227111543.0760308s1953    sz a          000 0 eng    al  53000009   a(OCoLC)2036885  aDLCcLUdOCoLCdDLC  apremarc00aHD7801b.I67 no. 33, etc.  a622.82 aInternational Labour Office10aSafety in coal mines.  a[Rev. and enl. ed.]  aGeneva,c1953-55.  a2 v.btables.c24 cm.1 aIts Studies and reports, new ser.,vno. 33  aPrevious ed. issued in 1939 under title: Safety provisions for underground work in coal mines.  aBibliography: v. 1, p. [262]-266.0 av.l. Organisation on the national and international levels.--v. 2. Legislation. 0aCoal mines and miningxSafety measures. 0aCoal mine accidents. 0aMine inspection.2 aInternational Labour Office.tStudies and reports, new ser.,vno. 33.