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Dallas Symposium 2018: 04 - Alain Martaud
Dallas Mineral Collecting Symposium: 2018
Dallas Symposium 2018: 08 - Dr. Andreas Stucki
Dallas Symposium 2018: 01 - Dr. Rob Bowell
Dallas Symposium 2018: 00 - Rob Lavinsky Opening
Dallas Symposium 2017: 04 - George Rossman
Dallas Symposium 2018: 05 - Dr. Federico Pezzotta for Dr. Renato Pagano
Dallas Symposium 2018: 07 - Dr. Peter Lyckberg
Dallas Symposium 2018: 02 - Mike Rumsey
Whats Hot In Tucson: 2018 - Alain Martaud Minéraux
Dallas Symposium 2017: 10 - Robert Hazen
Dallas Symposium 2017: 03 - Federico Barlocher
