ΦΥΣΙΚΑ ΦΕ 5 : ΑΝΘΡΩΠΟΣ ΚΑΙ ΗΧΟΣ- ΤΟ ΑΥΤΙ ΜΑΣ

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https://atheo.gr/yliko/fe/p/8,5/index.html 

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https://users.sch.gr/gregzer/F/F-E1/Hxos/FE%20-%20Hxos%20-%2005/index.html

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https://users.sch.gr/dimylonaki/mathimata_fisiki_to_afti_mas.htm

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https://digitalzoot.weebly.com/phiepsilon5-902nuthetarhoomegapiomicronsigmaf-kappaalphaiota-942chiomicronsigmaf---tauomicron-alphaupsilontau943-mualphasigmaf.html

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