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[2] “The Number of Tires Sold,” Japan Automobile Tire Manufacturers Association, 2013. http://www.jatma.or.jp/toukei/
[3] “The Number of Automobiles Owned by People in Japan in 2012,” Automobile Inspection & Registration Information Association, 2013. http://www.airia.or.jp/number/index.html
[4] Bridgestone Corporation, 2013. http://www.bridgestone.co.jp/
[5] “Motorcycles,” HONDA, 2013. http://www.honda.co.jp/motor/
[6] Daihatsu, 2013. http://www.daihatsu.co.jp/index.htm
[7] Toyota, 2013. http://toyota.jp/
[8] Mitsubishi Fuso Truck & Bus Corporation, 2013. http://www.mitsubishi-fuso.com/
[9] “Evaluation Result of Micro-Particulates for Human Health,” The Ministry of the Environment, Japan, 2013. http://www.env.go.jp/air/report/h20-01/index.html
[10] “The Granite Garden: Urban Nature and Human Design,” Anne Whiston Spirn, pp. 41-64.
[11] Pollen Observation System, The Ministry of the Environment, Japan, 2013. http://www.env.go.jp/chemi/anzen/kafun/
[12] “Osaka Prefectural Government Statistic Information,” Osaka Prefectural Government, 2013. http://www.pref.osaka.jp/toukei/nenkan/tn10-mokuji.html
[13] “Pneumoconiosis, Kanagawa Labor Bureau,” The Ministry of Health, Labour and Welfare, 2013. http://kanagawa-roudoukyoku.jsite.mhlw.go.jp/hourei_seido_tetsuzuki/anzen_eisei/tetsuzuki/jinpai02.html