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- Corporate/Agency Authors:
- United States Postal Service
- Publisher:
- United States Postal Service
- Date:
- Sept. 1, 1972
- SuDoc number:
- P 1.12/5a:trans.5
- Corporate/Agency Authors:
- United States Postal Service
- Publisher:
- United States Postal Service
- Date:
- [Oct. 1, 1970.]
- SuDoc number:
- P 1.12/5a:trans.1