00372nam a2200145Ia 45000010006000000050017000060080041000230200018000640400013000820820018000952450038001132600057001513000011002085460007002197118320191019105156.0160226s9999    xx            000 0 und d  a9788131764527  cPK-LaUMT  a 005.82bCRY-  aCryptography and network security  aNew Delhi,India:bITL Education Solutions Ltd,c2012  a188 p.  aEN