000 00481nam a2200181 4500
001 19047/95
003 KEPU
005 20130515015706.0
008 111112s9999 xx 000 0 und d
040 _cDLC
082 0 0 _a621. 381 95 uni
100 1 _a"sparkes, john . "
_929754
245 1 0 _athe heart of computers computer systems:
_b/
_c john.. sparkes
250 _a1 ed.
260 _auk :
_bthe open university press
_c1972.
300 _a", 60p.;
_c30 cm."
942 _2lcc
_cBK
999 _c54282
_d54282