IEC: 79-4A, Ed.1-1970; Electrical Apparatus for Explosive Gas Atmospheres, Part 4: Method of Test for ignition Temperature

I.E.C.

IEC: 79-4A, Ed.1-1970; Electrical Apparatus for Explosive Gas Atmospheres, Part 4: Method of Test for ignition Temperature - 1st - Geneva IEC 1970 - 5

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