Zip+4® codes, why they add up for business mailers.

Bibliographic Details
Corporate Author: United States Postal Service
Format: Government Document Book
Language:English
Published: [Washington, D.C.?] : U.S. Postal Service, [1984]
Series:Notice (United States Postal Service) ; 186.
Subjects:
Description
Item Description:"September 1984."
Physical Description:l folded sheet (6 pages) : illustrations (some color) ; 22 x 10 cm.