000 00252 a2200085 4500
100 1 _aOliver, Frank.J..
_eAutor
245 0 _aPractical Relay Circuits /
_cOliver Frank.J..
710 2 _aHayden.
_eWydawca
_4pbl
260 _aNew York :
_bHayden,
_c1971.
300 _aXII,363 s.;
_c24 cm.
999 _c9900
_d9900