00320nam a2200121 a 450000500170000002000150001708200170003210000310004924500270008026000360010730000230014350000320016620251203091216.0  a0131635107  a370.285bCOM  aMerrill, Paul F...[et al.]  aComputers in education  aNew JerseybPrentice-Hallc1986  a340 p.c22 cm.bPB  aincludes glossary and index