PanLinx
ISO 639-2/T
art-002
frr
ISO 639-3
art-001
frr
ISO 639-2/B
art-003
frr
ISO 639-3 Reference Names
art-289
Northern Frisian
ISO 639-3 Print Names
art-290
Northern Frisian
ISO 639-3 Inverted Names
art-291
Frisian, Northern
PanLex
