TY  - BOOK
AU  - International Electrotechnical Commission
TI  - IEC: 255 - 21 - 1 - 1988; Electrical relays Part21 Vibration, shock, bump and seismic tests on mesasuring relays and protection equipment Sec.1 Vibration tests (sinusoidal)
PY  - 1988///
CY  - Geneva
PB  - IEC
ER  -