;uminaire maintennace 
| Title |
Date |
Author |
|---|---|---|
| A Versatile Method of Calculating Illumination and Brightness | Feb 01, 1959 | B. F. Jones, J. R. Jones |
| Depreciation of Lighting Equipment Due to Dust and Dirt | Jan 01, 1924 | Earl A. Anderson, James M. Ketch |