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[Subject: Generalities]
Translated by: ROUCHDI ABDEL MAJID
Translated in 29 languages
[Subject: Mineralogy]
- صامد، ثابت مثل حجر الماس
Translated by: CHEHAIMI MOHAMAD
Translated in 23 languages
Translated in 8 languages
[Subject: Physics]
Translated by: FARHAD PEZESHKI
Translated in 26 languages