008981117s1988 us 000a eng ■020 ▼a0893914290 ■090 ▼a004.73▼bH497e ■1001 ▼aHendler, James A. ■24510▼aExpert systems▼bThe user interface▼dby James A. Hendler ■260 ▼aNew Jersey▼bAblex Publishing Corporation▼c1988 ■300 ▼a324p.▼c23cm ■50000▼aIncludes index