character: Ignaz Semmelweis
topic: Contribution to the Germ Theory in Obstetrics
grade: 10
subject: Science
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character: Louis Pasteur
topic: Development of Germ Theory
grade: 10
subject: Science
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character: Joseph Lister
topic: Antiseptic Technique in Surgery
grade: 10
subject: Science
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character: Robert Koch
topic: Koch's Postulates and Bacterial Pathogens
grade: 10
subject: Science
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