Air service instructions
By: U.S. Postal Service
Edition: Rev. Apr. 26, 1974.
Series: Methods handbook/series -- M-31; Transmittal letter - U.S. Postal Service -- 6
Publisher: The Service
Published: 1974
Place of publication: Washington, D.C
Language: eng
Subjects: Handbooks, manuals; Air mail service; United States Postal Service
Notes: Caption title.

Loose-leaf for updating.