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- 41007914 contributor B981176.
- 41007914 created "1940.".
- 41007914 date "1940".
- 41007914 date "1940.".
- 41007914 dateCopyrighted "1940.".
- 41007914 description "Thesis (Ph. D.)--University of Pennsylvania, 1939.".
- 41007914 extent "1 p. l., [8] p.".
- 41007914 issued "1940".
- 41007914 issued "1940.".
- 41007914 language "eng".
- 41007914 publisher "Philadelphia,".
- 41007914 subject "513.7".
- 41007914 subject "Curves.".
- 41007914 subject "Hyperspace.".
- 41007914 subject "QA645 .B49 1940".
- 41007914 title "Accessibility and separation by simple closed curves, [by] Ebon Elbert Betz.".
- 41007914 type "text".