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[Subject: Mineralogy]
- sulfure naturel de fer employé pour la fabrication de l'acide sulfurique.
Translated in 16 languages
Translated by: TZUNG-HSIEN CHEN
Translated in 6 languages
Translated by: GUEST USER
Translated in 2 languages
[Subject: Generalities]
Translated by: DAVID LAURENT
Translated in 10 languages