TY  - BOOK
AU  - International electrotechnical commission
TI  - IEC: 439-1 - 1992 (Amendt. No.1 - 1995); Low-voltage switchgear and controlgear assemblies part 1- type-tested and partially type-tested assemblies
PY  - 1995///
CY  - Geneva
PB  - IEC
ER  -