00302nam a2200109 a 450000500170000002000150001708200200003210000210005224500710007326000300014430000180017420251203091814.0  a8170941220  a658.15,bD, ban  aBangs, David, H.  aManaging by the numbers: financial essentials for the entrepreneur  aDelhibVision Booksc1993  a167p.c23 cm.