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û ÿ ùΤΡΣ ΤΣ ΝΡΓ ùΣ 2 · Michael Faraday Justus Liebig Μία ύναμη 1 0 ιάφορς μορφές William Thomson (Kelvin) üνοποίηη 2ων «ανακαλύψ
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