On the focal surfaces of the congruences of tangents to a given surface.
Publisher: The Friedenwald company
Published: 1897
Place of publication: Baltimore
Language: eng
Number of pages: 34
Subjects: Congruences (Geometry)
Other titles: Pamphlets. Mathematics. Quartos. v. 2, no. 9.
Notes: Thesis (Ph. D.)--Johns Hopkins university.
Biographical sketch.