Obscene and pandering advertisement mail matter.
Hearing, Ninetieth Congress, first session.

APA Citation

United States. Congress. House. Committee on Post Office and Civil Service. Subcommittee on Postal Operations. (1967). Obscene and pandering advertisement mail matter: Hearing, Ninetieth Congress, first session. Washington: U.S. Print. Off..

MLA Citation

United States. Congress. House. Committee on Post Office and Civil Service. Subcommittee on Postal Operations. Obscene And Pandering Advertisement Mail Matter: Hearing, Ninetieth Congress, First Session. Washington: U.S. Print. Off., 1967.

Warning: These citations may not always be complete (especially for serials).