Zip+4 codes-- why they add up for business mailers
Contributors: United States Postal Service
Series: Notice -- 186; Notice (United States Postal Service) -- 186
Publisher: U.S. Postal Service
Published: 1987
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Postal service -- United States; Zip codes
Other titles: Zip plus four codes, why they add up for business mailers
Notes: Shipping list no.: 87-239-P

"March 1987."