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Dallas Symposium 2017: 08 - Peter Lyckberg
Dallas Symposium 2018: 07 - Dr. Peter Lyckberg
Dallas Symposium 2017: 04 - George Rossman
Dallas Symposium 2017: 02 - Richard Huges
Dallas Mineral Collecting Symposium: 2018
Dallas Symposium 2018: 00 - Rob Lavinsky Opening
Dallas Symposium 2018: 04 - Alain Martaud
Dallas Symposium 2018: 08 - Dr. Andreas Stucki
Dallas Symposium 2017: 01- Rob Lavinsky Opening
Dallas Symposium 2017: 07 - John Cornish
Dallas Symposium 2018: 01 - Dr. Rob Bowell
Peter Lyckberg: “Gem Pegmatites: An Update on Recent Production”
