Eise Eisinga was here: The decrease in authenticity of the planetarium in Franeker around 1900. Bulletin KNOB, [S. l.], v. 121, n. 2, p. 20–33, 2022. DOI: 10.48003/knob.121.2022.2.745. Disponível em: https://bulletin.knob.nl/index.php/knob/article/view/745. Acesso em: 21 apr. 2026.