000 00234nam a2200085 4500
080 _a
_b
245 _aIEC: 60079-18-1992-10: Electrical apparatus for explosive gas atmospheres part 18: Encapsulation 'm'
100 _aIEC
250 _a1
260 _aGeneva
_bIEC
_c1992
300 _a49
999 _c37109
_d37109