Thu?c long ??m ho?c tiêu ??m ???c s? d?ng ?? làm l?ng ch?t ti?t ra t? niêm m?c ph? qu?n và khí qu?n.Encyclopaedia Britannica's editors oversee issue locations during which they've extensive information, no matter if from many years of expertise obtained by focusing on that content material or by using study for an advanced degree. They write n