00329nam a2200133 a 450000500170000002000150001708200150003210000170004724500260006426000320009030000240012263000280014663000210017420251202164128.0  a0905104692  a005.1bCRE  aCreasey, Ian  aVic-20 mindstretchers  bSigma Technical Pressc1983  av,107p.b22 cm.cPB  aArtificial intelligence  aComputer science