Внесок користувача
- 05:17, 28 квітня 2017 (різн. • історія) . . (+1943) . . Н What Makes Air Pressure? (Створена сторінка: Even though you can not see air pressure it is always there and has real weight. It is made up primarily of oxygen and nitrogen molecules. Air is made up of 78...) (поточна)
