00423aam a2200157   4500003000500000005001700005008004100022020001500063040000600078082001800084100001900102245005900121260004800180300001600228650002100244OSt 20260622143519.0140223b1978    xxu||||| |||| 00| 0 eng d  a9221061515  c   a658.3121 WHI   aWhite Michael   aWorking Hours ; Assessing The Potential For Reduction   aGeneva bInternational Labour Office c1987  aix, : 104p.  aHourse Of Labor