การอนุรักษ์พลังงาน

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http://webkc.dede.go.th/testmax/node/3853

http://www.enconlab.com/ve/measure.html

http://www.enconlab.com/ve/Download/energy/The%20Economic%20Use%20of%20Refrigertion%20Plant.PDF

http://www.enconlab.com/ve/Download/energy/Economic%20of%20Electricity%20in%20Industry.PDF

http://www.e-report.energy.go.th/EPPO_files/doc-16.pdf

https://www.environment.nsw.gov.au/resources/communities/languageresources/130437-Energy-Thai.pdf

https://home.kapook.com/view78454.html