Last seen in:
- Newsday.com - Apr 18 2019
- Universal - Sep 27 2017
- Thomas Joseph - King Feature Syndicate - Aug 31 2017
- Thomas Joseph - King Feature Syndicate - Dec 8 2015
- Eugene Sheffer - King Feature Syndicate - Nov 24 2014
- Eugene Sheffer - King Feature Syndicate - Feb 22 2014
- L.A. Times Daily - Nov 2 2011
- L.A. Times Magazine - Feb 15 2009
- Universal - Jul 20 2004
Related Clues:
- Aerosol gas
- Fluorine/carbon compound
- Certain refrigerant
- Flammable hydrocarbon
- Gas used as a fuel
- Simple hydrocarbon
- Controversial refrigeration gas
- Colorless, odorless gas used as fuel
- Ozone menace
- Natural gas product
- Refrigerant trademark
- Chemical not made since 1995
- Odorless fuel gas
- Refrigerant ingredient
- Damager of the ozone layer