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[Subject: Photography & Photographs, Apparatus, Equipments, Materials]
Translated in 6 languages
[Subject: Precision & Other Instruments]
Translated in 5 languages
Translated in 4 languages
[Subject: Printing & Related Activities]
Translated in 2 languages
[Subject: Applied Mechanics, Automotive Industry]
[Subject: Mechanics]
[Subject: Metal Manufactures, Tube Machines]