To readjust postal classification on educational and cultural materials.
Subtitle: Hearing ... Eighty-fourth Congress, first session, on H.R. 5139 and H.R. 5142. July 13, 1955.
Publisher: U.S. Govt. Print. Off.
Published: 1955
Place of publication: Washington
Language: eng
Number of pages: 67
Subjects: Postal service -- United States -- Book rates; Parcel post -- United States