Last seen in:
- The Times - Concise - Times2 Concise 4793 - March 21, 2009
- The Times - Concise - Times2 Concise 4646 - September 30, 2008
- USA Today - Mar 26 2007
- The Times - Concise - Times2 Concise 3783 - December 26, 2005
- The Guardian - Quick crossword No 10,605 - May 3 2004
- The Guardian - Quick crossword No 10,447 - Oct 29 2003
Related Clues:
- Thunderstorm product
- Kind of layer
- Environmentalist's concern
- What CFC's deplete
- It's a gas
- Ultraviolet Index factor
- Bleaching agent
- Earth protector
- Common cleanser
- Suffocating solution
- Subject of environmentalist study
- Fertilizer ingredient
- Composition of an endangered layer
- Ultraviolet ray blocker
- Ray blocker