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O*NET Code Connector - Heating, Air Conditioning, and Refrigeration Mechanics and Installers - 49-9021.00

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“Heating, Air Conditioning, and Refrigeration Mechanics and Installers - 49-9021.00.” O*NET Code Connector, National Center for O*NET Development, https:/www.onetcodeconnector.org/ccreport/49-9021.00. Accessed 23 October 2019.

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National Center for O*NET Development. Heating, Air Conditioning, and Refrigeration Mechanics and Installers - 49-9021.00. O*NET Code Connector. Retrieved October 23, 2019, from https:/www.onetcodeconnector.org/ccreport/49-9021.00

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