Chemicals from salt
19.7 هزار بار بازدید -
12 سال پیش
-
A short video clip illustrating
A short video clip illustrating the chemicals that can be made from salt that can be viewed on-line by students or downloaded for showing in class.
12 سال پیش
در تاریخ 1391/08/22 منتشر شده
است.
19,732
بـار بازدید شده