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The ultra-violet ray apparatus for sterilizing water
Description of the small plants placed at the drinking fountains in the railway stations of the Compagnie du Nord, Paris. (1100 w.) (No. 35576 G)
The ultra-violet ray apparatus for sterilizing water
Description of the small plants placed at the drinking fountains in the railway stations of the Compagnie du Nord, Paris. (1100 w.) (No. 35576 G)
The ultra-violet ray apparatus for sterilizing water
L' Appareil de Sterilisation de l'Eau par les Rayons Ultra-Violets
1912
Ills.
Article (Journal)
French
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Ultra-violet lamps and practical measurement of sterilizing rays
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