00319nam a2200109Ia 4500008004100000082001500041100004700056245004200103250001200145260004400157300000800201240913s9999||||xx |||||||||||||| ||und||  a004  LEW/E  aHarry R Lewis and Christos H Papadimitrion 0aElements of the theory of Computation  a2nd Ed.  bPrentice Hall of IndiaaNew Delhic1999  a361