جاهز للتشغيل
جاهز للتشغيل
It has been shown that some Korean papers over a hundred years old contain contamination with radium-226, raising concerns about the health and nuclear risks associated with the past use of this substance.
تنويه: هذا ملخص تم إنشاؤه بواسطة الذكاء الاصطناعي
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