000 00310nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a658.54 I61
100 _aINTERNATIONAL LABOUR OFFICE
245 0 _aINTRODUCTION TO WORK STUDY
260 _aGENEVA
_bI.L.O
_c1969
300 _a27X19 P 436
942 _cBK
_2DDC
999 _c15287
_d15287