Economic problems and results of electrification of steam railroadsin the United States
By: [by] Yun Yuan Wong.
Published: 1931
Place of publication: Philadelphia
Language: eng
Number of pages: 99
Subjects: Railroads -- Electrification; Railroads -- United States
Notes: "References" at end of each chapter.
Thesis (Ph. D.)--University of Pennsylvania, 1931.