00000nam a2200000 a 4500 20251203091525.0 004.16 HEL Held,Gilbert IBM PC XT user's reference manual 2nd edn. New Delhi BPB 1987 479p. 24 cm. PB Mini computers-Manual <personal computers> <computer science> ENG 100 010 _ 63123 LIBSC C 43143 43143 0 0 0 0 PU PU 1998-04-08 0 004.16 HEL 63123 BK