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[Subject: Mineralogy]
Translated by: MARCO PRADELLI
Translated in 29 languages
[Subject: Petrology (Rocks)]
Translated in 17 languages
[Subject: Building Materials]
Translated in 8 languages
Translated in 6 languages
[Subject: Generalities]
Translated by: ALESSANDRO ZIGNANI
Translated in 5 languages
Translated in 3 languages