000
00282nam a2200121Ia 4500
008
191031s9999 xx 000 0 und d
100
_a
Borron (DW)
245
0
_a
Computer operating system
260
_b
"Chand & Co, New Delhi"
260
_c
1971
365
_b
36.52
942
_c
BK
999
_c
201847
_d
201847