000 00256nam a2200097Ia 4500
008 220201s1992 xx 000 0 eng d
100 _aTWITTY (WILLIAM B)
245 0 _aUNIX : ON THE IBM PC`
260 _bGALGOTIA PUB. PVT. LTD NEW DELHI
_c1992
942 _2ddc
999 _c95434
_d95434