TOTO,
we're not in Kansas anymore...

A server error occured and unexplained things are happening around us.

meedas046

تاريخ عدد افوجادروماهو عدد افوجادروولماذا سمي بهذا الإسم؟.هو العدد 6.02×10^23an increasing number of studies and reports from different organizations

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تاريخ عدد افوجادرو | Presentation by meedas046