00345n   a2200133 a 4500000002100000001000700021005001700028020001800045082002100063100002200084245004900106260004400155300001200199B B                 02882020220203165922.0  a81-203-2599-0  a004.6bP6;2 C.SC  aGupta, Kailash N.  aDigital Signature Network Security Practices  aNew DelhibPrentice-Hall of Indiac2006  ax 209p.