Petersen, Henry L.2019-01-251998Petersen, H. L. (1998). Environmental Management Systems (iso 14000) For The Upstream Petroleum Sector Of Ecuador (Unpublished report). University of Calgary, Calgary, AB.http://hdl.handle.net/1880/109563engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.report10.11575/PRISM/35822