16 stereo's of algebraic spherical curves
Model 323
Description
Spinner theory. 16 stereo's of algebraic spherical curves. Explanation and literature reference on the back sides.
Showcase of this model is Case number U 26
References
Andere Stereos siehe auch Bibliothek, Sachkatalog Darstellende Geometrie, 77f (Plastoskopmodelle) 103b (Elementargeometrie, Spezielles).