Categories Ministerial Decision Ministry of Environment: Ministerial Decision 4/91 Distributing the Responsibilities Arising from the Implementation of the Protocol concerning Marine Pollution 1991/4 4/1991 91/4 4/91 Post author By admin Post date March 31, 1991 You do not have access to this page. Please view our subscribe page to learn more about our subscription, or login if you already have an account. Username or E-mail Password Remember Me Forgot Password Tags Ministry of Environment ← Royal Decree 31/91 Establishing a Supreme Committee for Vocational Training and Work and Determining Its Competences → Royal Decree 38/91 Granting Omani Nationality