| 000 | 00357nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 210210b1968 xxu||||| |||| 00| 0 eng d | ||
| 082 | _a535 VANW | ||
| 100 | _aVAN HEEL (A C S) & VELZEL (C H F). | ||
| 245 | _aWhat is light? | ||
| 260 |
_aLondon _bWorld University Library _c1968 |
||
| 300 | _a256 | ||
| 650 | _aLight | ||
| 690 | _aOptics | ||
| 906 | _a039469 | ||
| 999 |
_c89760 _d89760 |
||