00289nam a2200109Ia 4500082001900000100003400019245003600053260003400089300002100123500000500144700003000149  a518.1bH913.CP  aHull, T. E. and Day, D. D. F.  aComputers and problem solvingb  aOntariobAddison-Wesleyc1970  axii, 276p. Index  a  aDay, D. D. F. ; jt. auth.