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Some photometric comparisons of illuminations produced by different lighting arrangements underground
Some photometric comparisons. (See also - (discussion) p 17-24; Colliery Guardian v 144 n 3708 and 3709 Jan 22 1932 p 149-53 and Jan 29 p 205-6 ; Iron and Coal Trades Rev v 124 n 3334 and 3335 Jan 22 1932 p 166-7 and Jan 29 p 206-7)
Some photometric comparisons of illuminations produced by different lighting arrangements underground
Some photometric comparisons. (See also - (discussion) p 17-24; Colliery Guardian v 144 n 3708 and 3709 Jan 22 1932 p 149-53 and Jan 29 p 205-6 ; Iron and Coal Trades Rev v 124 n 3334 and 3335 Jan 22 1932 p 166-7 and Jan 29 p 206-7)
Some photometric comparisons of illuminations produced by different lighting arrangements underground
Instn Min Engrs -- Trans
Kimmins, E.J. (author)
1932
17 pages
Article (Journal)
English
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