00558nam a2200193Ia 450000500170000000800410001702000170005804000180007504100080009308200200010110000170012124500620013825000120020026000340021230000230024665000260026965000340029565000350032920220713155238.0210716s2008    xx            000 0 und d  a978818282156  cAIMIT LIBRARY  aeng  a511.8 21bWALW  aWallis, W D.  aBeginners guide to discrete mathematics /cBy W D Wallis.  a1st ed.  aBoston :bBirkhauser ,c2008.  axi,367p. ;c23 cm.  aProperties of numbers  aBoolean algebras and circuits  aNumber theory and cryptography