00568nam a22002177a 450000500170000001000130001702000100003003500130004003700160005304000120006908200170008110000140009824501030011226000360021527000350025130000200028665000140030665000240032070000030034470000030034720170124105950.0  aA-904160  c00.00  aA-904160  bCen Lib/Ret  aDPLbEN  a331.544bBOS  aBose, J.K  aHandbook on contingent paid casual labour and substitute in postal establishment  /cby J.K. Bose   aCalcuttabThe world pressc1995  a37,A, College streetbCalcutta  a121p.c20cm(Hb)  aEconomics  a Labour Economics