000 00289nam a2200121Ia 4500
008 220201s1975 xx 000 0 eng d
100 _aOLIVER FRANK J
245 0 _aPRACTICAL RELAY CIRCUITS
250 _a2
260 _aDELHI
_bD B TARAPOREVALA SONS
_c1975
300 _a363
942 _2ddc
999 _c90320
_d90320