Last seen in:
- L.A. Times Daily - May 19 2024
- L.A. Times Daily - Oct 9 2022
- Universal - Oct 28 2021
- The Washington Post - Nov 9 2020
- L.A. Times Daily - Nov 9 2020
- Eugene Sheffer - King Feature Syndicate - Aug 5 2017
- Premier Sunday - King Feature Syndicate - May 1 2016
- L.A. Times Daily - Dec 5 2015
- L.A. Times Daily - Jan 3 2015
- L.A. Times Daily - Nov 6 2013
Related Clues:
- Ethanol, to dimethyl ether
- Fraternal twin, in chemistry
- Chemical compound
- One of chemically related compounds
- U-235 or C-14, e.g.
- Element form
- Heavy hydrogen, e.g.
- Chemical cousin
- Carbon-14, e.g.
- Carbon 13 or cobalt 60
- Chemist's study
- Chemistry test topic
- Elemental form
- Physicist's atom
- Uranium 238, e.g.