| 000 | 00411pam a2200157a 44500 | ||
|---|---|---|---|
| 082 |
_a621.327 _bSp7e |
||
| 100 | _aSpreadbury, F. G. | ||
| 245 | 1 | _aELECTRIC DISCHARGE LIGHTING | |
| 260 |
_aLondon _bSir I. Ptiman _c1946 |
||
| 300 | _a136 | ||
| 650 | _aElectric Lighting, Mercury Vapor | ||
| 650 | _aElectric Lighting, Sodium Vapor | ||
| 650 | _aFluorescent Lighting | ||
| 964 | _gCIRC | ||
| 997 | _a7534 s C | ||
| 999 |
_c417041 _d417041 |
||