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Max Planck - Wikipedia
Max Planck | Biography, Discoveries, & Quantum Theory
Max Planck - Wikipedia, den frie encyklopædi
Home - ISTITUTO MAX PLANCK
ESA - Max Planck: Originator of quantum theory - European …
Max Planck – Facts - NobelPrize.org
Max Planck, the Messiah of quantum physics | OpenMind
Max Planck - Planck - Cosmos - European Space Agency
Max Planck summary | Britannica
Max Planck | The Franklin Institute