00587cam a2200169u  4500008004100000020001500041100002500056245015300081260003500234300002000269650004100289650001600330700002600346942000700372050002100379999001700400830613s1967    enka          100 0 eng    a9221124754  aWalle Manfred.9662110aSafety and health in small-scale surface mines; A handbookb.Sectoral activities programme working paper (WP.168)cManfred Walle and Norman Jennings  aGeneva,bILO Publicationc2001  av, 51p.billus. 0aAccidents PreventionvStudying96622 0aSafety9747  aJenning Norman.96623  cBK00aTN295b.I62 1963  c29618d29618