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WikiPedia: Caterpillar Inc. http://www.cat.com http://www.cat.com/about-cat http://www.cat.com/cda/layout?m=37321&x=7 http://caterpillar.com http://www.caterpillar.com http://www.caterpillar.com/cda/files/2607135/7/Cat... http://www.catfootwear.com/US/en/contactus http://www.chicagotribune.com/business/ct-caterpil... http://money.cnn.com/magazines/fortune/fortune500/... http://www.djaverages.com/index.cfm?view=industria...