000 00339 a2200145 4500
082 _a621.381
_bPEN
090 _c11210
_d16093
100 _apenfold, R.A.
245 _aElectronics
_bbuild and learn
250 _a2nd.
260 _aEngland
_bBPB publications
_c1990
_g1990
300 _a111p.
_c21cm.
650 _aELECTRONICS
942 _cL
999 _c39681
_d39681