chemistry, geology, etc.
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Joined: Mon Apr 13, 2015 12:04 pm


Post by annaya » Mon Apr 13, 2015 12:06 pm

Hi friends,
In the present time, chemistry is an important subject because it is the need of the world. I know that without the use of the chemistry, we can't build the many types of the michael, to know about weather etc. Thanking you .
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