00330nam a2200133 a 450000500170000002000150001708200160003210000180004824500260006625000120009226000350010430000270013963000300016620251203091135.0 a0130941034 a658.05bCLI aClifton, H D. aBusiness data systems a3rd ed. aNew DelhibPrentice-Hallc1986 axiv,382p.b22 cm.cPB. aBusiness, data processing