| 000 | 00368nam a22000977a 4500 | ||
|---|---|---|---|
| 999 |
_c16241 _d16241 |
||
| 245 | _aDIN 45635-12:1978-Measurement Of Noise Emitted By Machines; Airborne Noise Measurement, Enveloping Surface Method; Electrical Switchgear And Control Gear | ||
| 260 |
_aBerlin : _bGerman Institute of Standarization, _c1978. |
||
| 300 | _a5 p. | ||
| 650 | _aNoise measurement | ||
| 942 | _cST | ||