00334nam a2200109 a 450000500170000002000150001708200190003210000160005124500790006726000560014630000220020220251203091757.0  a0853659095  a006.3,bD, For  aFord, Nigel  aExpert systems and Artificial intelligence: An information manager's guide  aLoNew DelhionbLibrary Association Publishingc1991  axiv,275p.c21 cm.