Categories Royal Decree Royal Decree 22/88 Amending A Provision in Royal Decree 51/83 Establishing the Rusayl Industrial Estate Authority 1988/22 22/1988 88/22 22/88 Post author By admin Post date February 27, 1988 Arabic Published in Official Gazette 378 issued on 1 March 1988. ← Royal Decree 23/88 Ratifying the Agreement for the Reciprocal Tax Exemption on Income from Air Transport Between the Government of the Sultanate of Oman and the Government of the Hashemite Kingdom of Jordan → Agreement for the Reciprocal Tax Exemption on Income from Air Transport Between the Government of the Sultanate of Oman and the Government of the Hashemite Kingdom of Jordan