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020 _ahard cover
082 0 0 _a621. 395 law
100 1 _a"lawrence, o r. "
245 1 0 _acomputer technology:digital principles to interfacing:
_b/
_c o.r. lawrence
250 _a2 ed.
260 _atoronto :
_bmc graw-hill ryerson
_c1990.
300 _a"x, 388p.;
_c25 cm."
504 _a
650 0 _acomputer circuits
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999 _c36715
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