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"Parkinson" horizontal illumination chart
Chart devised by Parkinson Gas Lighting Research Bureau for simpler solution of well-known equation given. Before Illum Eng Soc. (Formerly Illum Engr)
"Parkinson" horizontal illumination chart
Chart devised by Parkinson Gas Lighting Research Bureau for simpler solution of well-known equation given. Before Illum Eng Soc. (Formerly Illum Engr)
"Parkinson" horizontal illumination chart
Light Lighting
Davey, W.J.C. (author)
Light and Lighting ; 29
1936
2 pages
Article (Journal)
English
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