Postal rates and revenue and cost analysis.
Subtitle: Hearings, Ninety-first Congress, second session.
Publisher: U.S. Govt. Print. Off.
Published: 1970
Place of publication: Washington
Language: eng
Number of pages: 377
Subjects: Postal rates -- United States.
Notes: Hearings held Apr. 15-June 2, 1970.
"Serial no. 91-24."