000
00264nam a2200109Ia 4500
008
220201s1992 xx 000 0 eng d
100
_a
Leiu, David A
245
0
_a
Ms dos: the basic course
260
_b
Delhi : CBS Publishers
_c
1992
300
_a
155
942
_2
ddc
999
_c
85122
_d
85122