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  • A&G Mercury. "A&G Mercury Tow Tractors: Information Guide." April 20, 2005. (Oct. 9, 2008) http://www.agmercury.com/Tow%20Tractor%20PDFs/ Tow%20Tractor%20Sales%20Information.pdf
  • Mraz, Stephen J. "Engineering an ad." Machine Design. Jan. 10, 2008. (Oct. 9, 2008) http://machinedesign.com/ContentItem/71927/Engineeringanad.aspx
  • The Raymond Corporation. "Glossary." (Oct. 9, 2008) http://www.raymondcorp.com/solutions/glossary.cfm?selector=D
  • Webtec Products Ltd. "Draw Bar Pull." (Oct. 9, 2008) http://www.webtec.co.uk/techinfo/equation/eqnfr/eqn03.htm
  • Webtec Products Ltd. "Road Rolling resistance." (Oct. 9, 2008) http://www.webtec.co.uk/techinfo/equation/eqnfr/eqn14.htm

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