Orthocentric properties of the plane directed n-line ...
By: by Joseph E. Hodgson.
Publisher: The New era printing company
Published: 1912
Place of publication: Lancaster, Pa
Language: eng
Number of pages: 231
Subjects: Curves, Plane
Notes: Abstract of thesis (Ph. D.)--Johns Hopkins university, 1910.
Biography.
Reprinted from the American mathematical society Transactions, v. 13.