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Translated by: JUAN GOMEZ ESCOBAR
Translated in 19 languages
[Subject: Generalities]
Translated in 17 languages
[Subject: Precision & Other Instruments]
Translated in 16 languages
Translated in 7 languages
[Subject: Military Art & Science - Engineering - Railroads]
Translated in 3 languages
[Subject: Building Materials]
Translated by: JOCELYN MEERSOHN MORALES
Translated in 20 languages