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Portret van Prof. Dr. J.G. Rutgers door W. van Wijngaarden. nl Portret van Prof Dr Rutgers door van Wijngaarden europeana eu html Portret van Prof Dr Rutgers door van Wijngaarden op europeana eu Stichting Academisch Erfgoed Data provider other versions cczero Uploaded with Professors from the Netherlands Mathematicians from the