jporta @jporta Not recently active ActivityProfileGroups 2 PersonalMentionsFavoritesGroups Show: — Everything — Updates New Groups Group Memberships Group Updates jporta joined the group SIG-03 Aperiodic Crystals 8 years, 4 months ago SIG-03 Aperiodic Crystals Visit group jporta joined the group SIG-09 Crystallographic Computing 8 years, 4 months ago SIG-09 Crystallographic Computing Visit group