00859cam a22002771  4500001001300000003000400013005001700017008004100034010001700075035001900092040004200111042001200153050002300165082001600188110003200204245005700236260001900293300002300312500009100335650002700426650002000453650001700473650001300490711006100503999001700564l  31000063 DLC20260227111533.0790709s1931    sz           i100 0 eng c  al  31000063   a(OCoLC)5151704  aU.S. Dept of Labor. LibrarycOCldDLC  apremarc00aHD5119b.M615 1931  a331.81822332 aInternational Labour Office10aHours of work in coal mines.bItem II on the agenda.  aGeneva,c1931.  aiv, 205 p.c21 cm.  aAt head of title: Report 2. International Labour Conference. 15th sess., Geneva, 1931. 0aCoal mines and mining. 0aHours of labor. 0aCoal miners. 0aLignite.2 aInternational Labor Conferencen(15th :d1931 :cGeneva)  c36014d36014