000 | 00260nam a2200073 4500 | ||
---|---|---|---|
080 |
_a _b |
||
245 | _aIEC: 617 - 7 - 1983; Graphical symbols for diagrams Part 7 switchgear, controlgear and protective devices | ||
700 | _aInternational Electrotechnical Commission | ||
260 |
_aGeneva _bIEC _c1983 |
||
300 | _a56p | ||
999 |
_c30054 _d30054 |