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Thermal-water pools and non-pumped (free-flowing) hot spring rivers at the foothills of the Arenal Volcano, near La Fortuna, Costa Rica
Illustration vector graphic of thermal Image Scanning for Influenza Border Screening and check people who come from overseas in airport. Coronavirus spread control. infrared color scale.
Infrared thermovision image showing lack of thermal insulation on House
Thermal Image of Heat Leak through Windows

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