Keywords: Prof. Dr. J.A. Schouten, 1938-39.jpg en Prof Dr J A Schouten 1938-39 1938 1939 1938-39 Official TH Delft photograph retouched version of picture found online at http //www dwc knaw nl/biografie/pmknaw/ pagetype authorDetail aId PE00002890 knaw nl author other versions Anonymous-EU Uploaded with UploadWizard Jan Arnoldus Schouten |