PTC Rows 1-3: The Periodic Table Challenge GC2Q976
by BerkeleyBoomers
Contra Costa county, CA, United States
15.7 Points
97 finds in 15 years, 2 months
Next find points: 15.5
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First available: May 7, 2011
Last Update: July 24, 2026 11:10 PM
Last Full Sync: June 26, 2026 7:57 PM
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