periodensystem
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periodensystem |
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| navigate by keyword : berlin chemical chemie chemische chemischen chemistry child cobalt copper deutsch deutschland element elementen formula german germania germanic germany gold hamburg industrie iron kernladung material mendeleevs ordnungszahl periodensystem periodic school schoolboy schoolgirl silver student table teaching template textbook tutorial zinc |
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| Periodic table of chemical elements. Das Periodensystem der Elemente |
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