000 00294nam a2200121Ia 4500
008 220201s9999 xx 000 0 eng d
082 _a338
_bDUReference
100 _aDurgesh Chandra
245 0 _aDynamics of Productivity
260 _bKitab Mahal Distributs .
300 _a258
942 _2ddc
999 _c8195
_d8195