Use of Postal Code Numbers in Mail

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LETTER OF INSTRUCTIONS NO. 605: Use of Postal Code Numbers in Mail

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Title Supreme Court: Use of Postal Code Numbers in Mail

Law: Letter Of Instructions No. 605

Decision Date: Sep 29, 1977

Letter of Instructions No. 605 mandates all government departments, local governments, and government-owned or controlled corporations in the Philippines to use postal code numbers on their mail, aiming to improve the efficiency of mail sorting and delivery in the country.

postal code numbers

mail sorting

mail delivery

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