This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
FIdfig. Tracs ergographiques de Maggiora. fr Courbes ergographiques de Maggiora excitation lectrique des muscles File Binet Henri La fatigue intellectuelle djvu Creator Alfred Binet other versions Custom marker PDold Uploaded with Alfred Binet
Page 2023 Free-images.com. All images are Public Domain