Energy in the NAFTA: Free trade confronts Mexico ' s constitution Author English R.D. Journal/Series Tulsa Journal of Comparative & International Law | Vol. 1(1); 1 - 32; 33 p. Date 1993 Source IUCN (ID: ANA-055642) Publisher | Place of publication University of Tulsa College of Law | Tulsa, OK, USA Language English Country/Territory Mexico Subject Mineral resources Keyword Energy conservation/energy production Constitutional law International trade Geographical area North America