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Ideafinder.com/history/inventors/linde.htm
Pantherfile.uwn.edu/juliekp2/www/refrigerator.htm
Inventors.about.com/library/inventors/blrefrigerators.htm
Ehow.com/about_5470799_did-peple-use-before-refrigerators.html
Findingdulcinea.com/features/science/innowvations/great-inventions/the-refrigerator.html
Liudger, Dienel
Linde:History of a Technology corporation
2004
Pantherfile.uwn.edu/juliekp2/www/refrigerator.htm
Inventors.about.com/library/inventors/blrefrigerators.htm
Ehow.com/about_5470799_did-peple-use-before-refrigerators.html
Findingdulcinea.com/features/science/innowvations/great-inventions/the-refrigerator.html
Liudger, Dienel
Linde:History of a Technology corporation
2004
