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[Subject: Generalities Of Education]
Translated by: SONIA MARIANI
Translated in 28 languages
[Subject: Architectural Construction]
Translated by: KATRIN HELD
Translated in 2 languages
[Subject: Athletic & Outdoor Sports & Games]
Translated by: MIRJAM BRÜCKNER
Translated in 103 languages
[Subject: Metal Manufactures]
Translated in 6 languages
Translated in 5 languages