00391nam a2200145 a 450000500170000010000160001724500420003326000280007530000110010369000250011496400190013999700180015899900170017695200520019320251203090715.0  aArora, P.N.  aBusiness mathematics, P.N.Arora, eng.  aAllied Publishersc1985  a1184p.  aBusiness Mathematics  bENGcdefg_  a18718 LIBSC C  c17116d17116  00104070aPUbPUd1998-10-08l0o p18718yBK