000 00334 a2200133 4500
082 _a621.38928
_bMAR
090 _c13364
_d19639
100 _aMarston, R.M.
245 _aElectronic alarm circuits manual
260 _aNew Delhi
_bBPB publications
_c1993
_g1993
300 _a124p.
_c21cm.
650 _aSecurity electronics
942 _cL
999 _c41702
_d41702