000 00324nam a22001337a 4500
082 _a621.317
_bLYT
_cL-10, P-17
100 _aLythall, R.T
245 _aThe J & P Switchgear book.
250 _a4th
260 _aLondon
_bJohson & Phillips Ltd.
_c1974
300 _aviii, 639 p. :
_bIll. :
_c10 Cm
650 _aMCE
942 _cBK
999 _c5786
_d5786