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[Subject: Physics]
Translated in 17 languages
Translated in 8 languages
[Subject: Economics]
Translated by: ROBERT GRIGOR BAXTER
Translated in 5 languages
[Subject: Heating, Ventilating, Air Conditioning]
Translated in 3 languages
[Subject: Metallurgy - Junker]
Translated in 7 languages
Translated in 6 languages