000
00271nam a2200121Ia 4500
008
180721s9999 xx 000 0 und d
100
_a
Sharon Crawford
245
0
_a
Your first modem
260
_b
BPB Publications
260
_c
1994
365
_b
120.00
942
_c
BK
999
_c
139288
_d
139288