000 00255nam a2200085 4500
080 _a
_b
245 _aIEC: 60079-1, Ed.4-2001-02; Electrical Apparatus for Explosive Gas Atmospheres- Part 1: Flameproof Enclosures "d"
100 _aI.E.C.
250 _a4th
260 _aGeneva
_bI.E.C.
_c2001
300 _a53
999 _c37180
_d37180