PTC Row 7: The Periodic Table Challenge GC2Q97C
by BerkeleyBoomers
Contra Costa county, CA, United States
29.0 Points
52 finds in 15 years, 1 month
Next find points: 28.5
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First available: May 7, 2011
Last Update: June 8, 2026 1:35 PM
Last Full Sync: February 16, 2026 6:47 AM
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