March 1980
9presidential decrees- 01PD 1687Granting Monthly Gratuity and Other Privileges to an Awardee of the Medal of Valor.
- 02PD 1686Imposing a Tax on Every Motor Vehicle Equipped with Air Conditioner
- 03PD 1685Amending Presidential Decree Numbered Thirteen Hundred Nine Authorizing the Central Bank of the Philippines to Engage in Special Borrowing and Lending Operations.
- 04PD 1684Amending Further Act Numbered Two Thousand Six Hundred Fifty-Five, as Amended Otherwise Known as "the Usury Law."
- 05PD 1683Amending Certain Sections of Republic Act No. 6425, as Amended, Otherwise Known as the Dangerous Drugs Act of 1972 and for Other Purposes.
- 06PD 1682Amending Certain Sections of the National Internal Revenue Code of 1977, as Amended.
- 07PD 1681Amending Section 2 of Presidential Decree No. 1674 Entitled: "Providing a Mechanism for Price Regulation, Creating a Price Stabilization Council, Prescribing Its Powers and Responsibilities and for Other Purposes."
- 08PD 1680Amending Presidential Decree No. 492, as Amended, Entitled "Creating the Metro Manila Transit Corporation, Appropriating the Funds Therefor and Other Purposes"
- 09PD 1679Amending Certain Sections of Presidential Decree No. 1464, Otherwise Known as the Tariff and Customs Code of 1978