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πŸ”΄ 2021 Chemistry - OSMAN JAYASINGHE...πŸŽ“

I'm a graduate of the University of Ruhuna,paper marking examiner-chemistry in Advanced Level examination since 2003 and also a government teacher.I have produced outstanding and unbeatable results in Matara district every ye
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https://t.me/osmanJayasinghe2021chem

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