IEC: 79 - 13 - 1982; Electrical apparatus for explosive gas atmospheres. Pt.13 - Construction and use of rooms or buildings protected by pressurization

IEC: 79 - 13 - 1982; Electrical apparatus for explosive gas atmospheres. Pt.13 - Construction and use of rooms or buildings protected by pressurization - Geneva IEC 1982 - 17p

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