Reference information. 1. the solar bicycle patents patent number: 3712,Source: http://www.ipthailand.go.th/index.php. Last year searched September 12, 2015 2. solar power bike Dr. Somporn helps ARI,Source: https://www.facebook.com/csomporn. Last year searched September 12, 2015 3. solar energy is another renewable energy-powered energy.Source: http://www.egco.com/th/energy_knowledge_solar1.asp. Last year searched September 21, 2015
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