00307nam a2200109 a 450000500170000002000150001708200160003210000160004824500690006426000400013330000240017320251203091234.0  a047182786X  a005.74bFID  aFidel, Raya  aDatabase Design for Information RetrievalbA Conceptual Approach  aNew YorkbJohn Wiley & Sons.,c1987  axv,232p.c24 cm. HB