File:Professors Koch and Pfeiffer working in a laboratory, invest Wellcome L0030175.jpg
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![File:Professors Koch and Pfeiffer working in a laboratory, invest Wellcome L0030175.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Professors_Koch_and_Pfeiffer_working_in_a_laboratory%2C_invest_Wellcome_L0030175.jpg/475px-Professors_Koch_and_Pfeiffer_working_in_a_laboratory%2C_invest_Wellcome_L0030175.jpg)
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current | 23:10, 10 October 2014 | ![]() | 2,907 × 3,669 (3.5 MB) | commons>Fæ | =={{int:filedesc}}== {{Artwork |artist = |author = |title = Professors Koch and Pfeiffer working in a laboratory, invest |description = Professors Koch and Pfeiffer working in a laboratory, investigating the... |
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