Accessibility and separation by simple closed curves
By: [by] Ebon Elbert Betz.
Published: 1940
Place of publication: Philadelphia
Language: eng
Subjects: Curves.; Hyperspace.
Notes: Thesis (Ph. D.)--University of Pennsylvania, 1939.
"Reprinted from the American journal of mathematics, vol. LXIII, number 1, p. 127-135."