00318nam a2200109Ia 450000500170000008000180001710000240003524500640005926000370012330000300016058300180019020260716043555.0  a12.04.01 C187  aCampbell, Bonita J.  aUnderstanding information systems : foundations for control  bWinthrop Pub.aCambridgeUSc1977  axviii, 153 p. : ill., map  c3/11/05kJOYD