Categories Royal Decree Royal Decree 42/90 Reorganising the Institute of Public Administration 1990/42 42/1990 90/42 42/90 Post author By admin Post date May 14, 1990 This item was repealed by Royal Decree 28/2016. Arabic Auto Translate Published in Official Gazette 431 issued on 15 May 1990. ← Sultan Qaboos University Board: Decision 1/90 Making Amendments to the Executive Regulation of the Sultan Qaboos University Law → Royal Decree 45/90 Ratifying the Agreement between the Sultanate of Oman and the Government of the French Republic for the Avoidance of Double Taxation