TY  - BOOK
AU  - International Electrotechnical Commission
TI  - IEC: 255 - 21 - 3 - 1993; Electrical relays Part21 Vibration, shock, bump and seismic tests on mesasuring relays and protection equipment Sec.3 Seismic tests
PY  - 1993///
CY  - Geneva
PB  - IEC
ER  -