TY  - BOOK
AU  - International Electrotechnical Commission
TI  - IEC: 79 - 12 - 1978; Electrical apparatus for explosive gas atmospheres Part 12 Classification of mixtures of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents
PY  - 1978///
CY  - Geneva
PB  - IEC
ER  -