Galbraith, James K.2011-05-162017-05-112011-05-162017-05-112002-08http://hdl.handle.net/2152/11239textelectronicengCopyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.Petroleum products--Environmental aspects--United StatesPetroleum products--Environmental aspects--MexicoCanada. Treaties, etc. 1992 Oct. 7Restricted