000
00272nam a2200109Ia 4500
008
190703s9999 xx 000 0 und d
082
_a
621.38195404 S775
100
_a
STALLINGS,W
245
0
_a
DATA AND COMPUTER COMMUNICATIONS
260
_a
NEW DELHI
_b
PHI
942
_c
BB
_2
DDC
999
_c
6145
_d
6145