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Physics Simply By John Heshmat. Смотреть видео: IGCSE Solving Questions On Light Online Class In Arabic By John Heshmat, IGCSE Solving Paper 4 Revision Questions On Atomic And Waves Online Class In Arabic By John Heshmat, IGCSE Physics Lesson 28 Electromagnetic Induction Part 1, IGCSE Sound Waves Online Class In Arabic By John Heshmat.