瓶砚水方便, 但保酌干????逻SHOTYK教授的公檫嘱演。
Is Bottled Water Safe? Prof. William Shotyk is going to tell you. See the following announcement.
When: Monday December 18th
Where: Ottawa Public Library Auditorium (120 Metcalfe St.)
Time: 7:15 ? 9 PM
World class geochemical researcher, Dr. William...