The post office of the United States
By: by Pao Hsun Chu.
Edition: 2d ed.
Published: 1932
Place of publication: New York
Language: eng
Number of pages: 148
Subjects: United States. Post Office Dept.; Postal service -- United States -- History.
Notes: Bibliography: p. 139-148.
Thesis (PH. D.)--Columbia University, 1929.
Vita.