arianna @arianna Active 2 months, 1 week ago ActivityProfileGroups 2 PersonalMentionsFavoritesGroups Show: — Everything — Updates New Groups Group Memberships Group Updates arianna joined the group SIG-03 Aperiodic Crystals 2 months, 1 week ago SIG-03 Aperiodic Crystals View group arianna joined the group SIG-04 Electron Crystallography 1 year, 5 months ago SIG-04 Electron Crystallography View group