000
002520000a22001210004500
245
_a
Computing is easy
100
_a
Parker, David
100
_a
Hann, Martin
260
_b
Butterworths
_c
1982
080
_a
681.3
_b
P3
041
_a
EN
942
_c
BK
999
_c
115843
_d
115843