TY  - BOOK
AU  - I.E.C.
TI  - IEC: 61779-4, Ed.1-1998; Electrical apparatus for the detection and measurement of flammable gases- Part 4: Performance requirements for group II apparatus indicating a volume fraction up to 100% lower explosive limit
PY  - 1998///
CY  - Geneva
PB  - IEC
ER  -