000 00298nam a2200133Ia 4500
005 20260413100424.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _aKhanno, O.P
245 0 _aWork Study
260 _bDelhi ,Dhanpat Rai &Sons
_c1998
300 _a327
942 _cDB
999 _c756
_d756