books.google.co.uk - 2011 Updated Reprint. Updated Annually. Sudan Oil and Gas Exploration Laws and Regulation Handbook...http://books.google.co.uk/books/about/Sudan_Oil_and_Gas_Exploration_Laws_and_R.html?id=l-rSiphgoQgC&utm_source=gb-gplus-shareSudan Oil and Gas Exploration Laws and Regulation Handbook