00425nam a2200157Ia 4500008004100000020001500041082001900056100001700075245003800092260005800130300000800188650001600196650001400212653002400226653001700250170901s1985    xx            000 0 und d  a8185336075  a001.6442bH26E  aHanson, Owen 0aEssentials of Computer Data Files  aNew DelhibAffiliated East-West Press Pvt. Ltd.c1985  a176  aGneralities  aKnowledge  aDatabase management  aFiles (Data)