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Healthy Indoors Show - Ellen Tohn interview - May 13, 2018
Healthy Indoors Show - Ellen Tohn interview - May 13, 2018

Host Bob Krell interviews industry consultant & researcher, Ellen Tohn, after her keynote presentation at t...

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Healthy Indoors Show- Special Live Edition 4-16-18
Healthy Indoors Show- Special Live Edition 4-16-18

Guest Bill Spohn, of Tru Tech Tools, joins host Bob Krell, to discuss Carbon Monoxide (CO) in the indoor en...