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The penicillin was discovered the 1928 by Alexander Fleming.

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The penicillin was discovered the 1928 by Alexander Fleming.

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 The x ray tube was invented and 8 de november the 1895 by Wilhelm RÖbtgen.

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 The x ray tube was invented and 8 de november the 1895 by Wilhelm RÖbtgen.

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The theory cell was invented 1830 and 1880 by Robert Hooke.

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The theory cell was invented 1830 and 1880 by Robert Hooke.

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The theory of the species invented 1840 by Charles Darwin.

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The theory of the species invented 1840 by Charles Darwin.

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The thermomenter mercury and alcohol thermomenter were invented the 1704 by Daniel Fahrenhelt.

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The thermomenter mercury and alcohol thermomenter were invented the 1704 by Daniel Fahrenhelt.

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 The telescope and the microscope were invented the 1609 by Galileo Galilei.

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 The telescope and the microscope were invented the 1609 by Galileo Galilei.