Computer programming for Presort First Class Mail.
Contributors: United States Postal Service.
Series: Pub -- 232.; Publication (United States Postal Service) -- 232.
Publisher: U.S. Postal Service
Published: 1980
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Mail sorting.
Notes: "Oct. 1980"--P. 4 of cover.