000
00309nam a2200121Ia 4500
008
190711s9999 xx 000 0 und d
082
_a
621.381951 P485
100
_a
PETERSON,J.L
245
0
_a
OPERATING SYSTEM CONCEPTS
260
_a
Massachusetts
_b
Addison Wesley
_c
1985
300
_a
24X16
942
_c
BK
_2
DDC
999
_c
21147
_d
21147