00278nam a2200121Ia 4500003000400000020001500004040000800019082001500027100001600042245005200058260004000110300000600150LDD  a0201518198  cLDD  a006.3 H191  aBarr, Avron 0aHandbook of artificial intelligencecAvron Barr  aReading MassbAddision Wesleyc1989  av