Rail and motor carriers
Subtitle: competition and regulation
By: [by] Ping Nan Wang.
Published: 1932
Place of publication: Philadelphia
Language: eng
Number of pages: 230
Subjects: Transportation -- United States.; Railroads -- United States.; Transportation, Automotive -- United States.
Notes: "A selected bibliography": p. 219-230.
Thesis (Ph. D.)--University of Pennsylvania, 1933.
"Printed in China."