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[Subject: Electricity & Electronics]
Translated in 9 languages
Translated in 8 languages
[Subject: Light & Paraphotic Phenomena]
Translated in 6 languages
[Subject: Precision & Other Instruments]
[Subject: Applied Mechanics, Motorcycles]
Translated in 3 languages
[Subject: Special Lighting Effects ]
Translated by: FRANK SCHMIERER
[Subject: Furnishing & Decorating Home]
Translated in 2 languages