• Thumbnail for Pieter Geyl
    spelled as Geijl. "Pieter C.A. Geyl (1887–1966)". Royal Netherlands Academy of Arts and Sciences. Retrieved 27 July 2015. P. van Hees, "Pieter Geyl (1887–1966)"...
    12 KB (1,523 words) - 23:19, 23 January 2024