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LINKS
1- www.mechsite.com
2- www.howstuffworks.com
3- www.energy.gov
4- www.eia.doe.gov
5- www.ases.org
6- www.awea.org
7- www.homepower.com
8- www.eere.energy.gov
9- www.britishwindenergy.co.uk
10- www.hfcletter.com