000 00271nam a2200109Ia 4500
008 160930s9999 xx 000 0 und d
100 _aDalela,S.
245 _aElements of Work Study
260 _aDelhi
_bStandard Publishers Dist.
300 _aviii,298p.;24cm
942 _cDB
999 _c8270
_d8270