00273nam a2200109 a 450000500170000002000150001708200180003210000250005024500280007526000360010330000240013920251203090952.0  a0201083132  a001.535,bwat  aWaterman, Donald, A.  aGuide to expert systems  aSingapore: Addison-Wesleyc1986  axviii, 419p.c22 cm