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[Subject: Electricity & Electronics]
Translated in 10 languages
[Subject: Photography & Photographs, Apparatus, Equipments, Materials - 35Mm Camera]
Translated in 8 languages
[Subject: Heating, Ventilating, Air Conditioning]
Translated in 7 languages
[Subject: Household Utilities - Vcr - Video Recorder]
Translated in 5 languages
[Subject: Data Processing Computer Science]
[Subject: Agricultural Machinery]
Translated in 3 languages
[Subject: Applied Mechanics, Motorcycles]
[Subject: Light & Paraphotic Phenomena]
Translated in 2 languages
[Subject: Other Branches Of Engineering]