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Lanterns and Reflectors : Wardle System (1922)
Wardle Engineering Co. · Wardle Engineering Co. · leaf 28
No. 148. Inverlite Fitting. No. 520. Inverlite Fitting-. … Characteristic Polar Curve. Result of Actual Test.Gas Lighting · Reflectors · Lanterns · Lighting Fixtures
Internet Archive · Building Technology Heritage Library · Public Domain Mark 1.0. Free to use for anything.
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