උසස් පෙළ (දේශීය විෂය නිර්දේශය) – රසායන විද්‍යාව

Chemistry Theory and Revision

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Ciencia College

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A/L Chemistry

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Sarasavi Vidyapeetaya - Maharagama

A/L Chemistry - Local and Edexcel

GCSE / Cambridge/Edexcel / G.C.E Chemistry / Environmental Management O/L