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recent bookmarks from swampersWhich is heavier? A pound of feathers or a pound of gold?2017-05-12T12:03:10+00:00
https://www.mygemologist.com/learn/jewelry-metals/measuring-gold-weight/
swamperslanguage weight gold historyhttps://pinboard.in/https://pinboard.in/u:swampers/b:381b94b9c14a/