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| View Original: | PJvanKerckhoff.jpg (2336x2975) | |||
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| Keywords: PJvanKerckhoff.jpg en Dutch chemist Petrus Johannes van Kerckhoff 1813-1876 1852 http //hoogleraren ub rug nl/ page showPerson type hoogleraar hoogleraar_id 57 Website Rijksuniversiteit Groningen Painting by Jan Ensing other versions PD-old-70-1923 Chemists from the Netherlands Faculty of Rijksuniversiteit Groningen Jan Ensing Photographs uploaded by User Vysotsky | ||||
