000 00405 a2200157 4500
003 ISURa
008 160419b xxu||||| |||| 00| 0 eng d
041 _aEnglish
082 _a537.5
_bPHY
100 _aVithana , J.D.
_eed
_911644
245 _aPhysics electronics
260 _c1985
_aNugegoda
_bOpen University
_g1985
300 _bill.
_c21 cm.
_a247 p.
650 _aELECTRONICS
_911645
942 _cLN
_2ddc
999 _c38094
_d39641