Reference list entries
U.S. Census Bureau, Bureau of Economic Analysis. (2012, December). U.S. international trade in goods and services, October 2012 (Report No. CB12-232, BEA12-55, FT-900 [12-10]). Retrieved from http://
U.S. Transportation Department, Pipeline and Hazardous Materials Safety Administration. Emergency response guidebook 2012. Washington, DC: Author.
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