Privacy in the mail.
Subtitle: Hearings, Ninetieth Congress, second session. July 23 and 24, 1968.
Publisher: U.S. Govt. Print. Off.
Published: 1968
Place of publication: Washington
Language: eng
Number of pages: 33
Subjects: Postal service -- United States; Privacy, Right of -- United States
Notes: "Serial no. 90-42."