000 00344nam a2200157Ia 4500
008 190201s9999 xx 000 0 und d
020 _a9.79E+12
082 _a621
082 _b38928
100 _a"Gupta,Kailash,N."
245 0 _aDigital Signature Networ
260 _aNew Delhi
260 _bPHI
260 _c2006
300 _a"vii,209"
999 _c43806
_d43806