000 00264nam a2200133Ia 4500
100 _aI.L.O.
942 _cBK
654 _awork
245 _aWork Study
260 _bI.L.O. Publications
_aGENEVA
_c1977
082 _a658.542
300 _a436
546 _aENGLISH
999 _c20403
_d20403