Area of third order to the theory of parabolic points
Model 220
Description
Area of third order to the theory of parabolic points. Gypsum.
Showcase of this model is Case number 41
References
Schilling, Martin(Hrg.): Catalog mathematischer Modelle, Leipzig(Verlag von Martin Schilling) 1911, 7.Auflage, No.175. p. 136.
Separataband M4 im Mathematischen Institut p. 205.