E. Jonckheere
University of Southern California, USA
Cite this page as 'Frank C Langbein, "E. Jonckheere," Ex Tenebris Scientia, 1st January 2010, https://langbein.org/e-jonckheere/ [accessed 17th July 2026]'.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.