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[Subject: Generalities]
Translated by: DAVID LAURENT
Translated in 8 languages
[Subject: Light & Paraphotic Phenomena]
Translated in 5 languages
[Subject: Athletic & Outdoor Sports & Games]
[Subject: Building Materials]
[Subject: Buildings]
Translated in 4 languages
[Subject: Chemistry]
[Subject: Applied Mechanics]
Translated in 2 languages
[Subject: Cleaning, Color, Other Technologies]
[Subject: Household Utilities]
[Subject: Automotive]
Translated by: GUEST USER