Radon gas

A radioactive, gaseous isotope of radon; it is a member of the thorium series and a daughter of radium-224. _{(Neuendorf, K.K.E. and others, 2011)}

• DGGS online catalog of government agency publications relating to: Radon gas
• Centers for Disease Control and Prevention (CDC): Get the Facts on Radon
• U.S. Environmental Protection Agency (EPA): Radon homepage
• UAF Cooperative Extension Service: Publications catalog