00326nam a2200133Ia 4500100001600000650002300016366000700039654002300046245004200069260004400111082001700155300000800172546001200180  aWallis/W.D   aFinite mathematics  f20  afinite mathematics  aBeginners guide to finite Mathematics  bSpringer InternationalaNew Delhic2003  a510/WALbWAL  a354  aENGLISH