00402nam a2200157Ia 4500008004100000020001800041035001000059082001500069100002300084245006200107250000800169260003300177300000800210500000900218650001700227210723s9999||||xx |||||||||||||| ||und||  a81-7758-774-9  a11876  a652.8BSTA  aStallings, William 0aCryptography And Network Security : Principles & Practice  a4rh  aN. DelhibDorling Kindersley  a680  a3151  aCryptography