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Comparison of indirect and direct illumination (1912)

Habrylwicz, Valentine Bernard, Kailer, Frank Spencer · leaf 22

An illustration from Comparison of indirect and direct illumination, 1912, leaf 22
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Interior lighting · Lighting · School Buildings · Theses

Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.

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