/images/1041385860215607387/1295914633219276820/ta-tai-pham-nhan-khoa-hoc-tu-tien-nga-tai-pham-nhan-khoa-hoc-tu-tien-chuong-1955-cuu-chan-dang-ma-ba.txt?ex=6710620d&is=670f108d&hm=31dd3912ef1d0a06164ea4cadb5860b0787bb7ea4565cc50de755fe6cd67c7b8&