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[Subject: Precision & Other Instruments]
Translated in 7 languages
[Subject: Aeronautics]
[Subject: Inland Waterway & Ferry Transportation]
Translated in 5 languages
[Subject: Applied Mechanics]
[Subject: Heating, Ventilating, Air Conditioning]
Translated in 4 languages
[Subject: Automotive]
[Subject: Agricultural Machinery]
Translated in 3 languages
[Subject: Food Technology]
Translated in 2 languages
[Subject: Household Utilities - Cookers And Ranges]