October 1983
4presidential decrees- 01PD 1888Levying a Surtax on Extraordinary Gains Realized by Oil Companies from Petroleum Products.
- 02PD 1887Further Amending Paragraph (1) of Section 6 of Republic Act No. 1828, as Amended by Republic Acts Nos. 2077 and 4167 and Presidential Decrees Nos. 1001, 1714 and 1824.
- 03PD 1886Cheating a Fact-Finding Board with Plenary Powers to Investigate the Tragedy Which Occurred on August 21, 1983
- 04PD 1885Amending Section 290-B of the National Internal Revenue Code as Amended, in Order to Expand the Scope of the “flexibility Clause.”