![](/img/cover-not-exists.png)
Upon the Ruled Surfaces Generated by the Plane Movements Whose Centrodes are Congruent Conics Tangent at Homologous Points
Dr. E. M. BlakeVolume:
21
Language:
english
Journal:
American Journal of Mathematics
DOI:
10.2307/2369603
Date:
July, 1899
File:
PDF, 1.80 MB
english, 1899