| 000 | 00508 a2200169 4500 | ||
|---|---|---|---|
| 080 |
_a621.32 _bN 277 H |
||
| 245 | 1 | _aHigh-frequency lighting | |
| 260 |
_aWashington _bNational Academy of Sciences _c1968 |
||
| 650 | _aHigh-Frequency Lighting | ||
| 700 | _aNational Research Council | ||
| 700 | _aBuilding Research Advisory Board | ||
| 700 | _aFederal Constructional Council | ||
| 100 |
_a _d |
||
| 300 | _a44 p. | ||
| 440 |
_aNo. 53 _vNAS _xBuilding Research Advisory Board _xTechnical re |
||
| 901 | _a159113 | ||
| 999 |
_c77411 _d77411 |
||