English Name
Time
Details from Source
PDVU
Wikipedia
PaofDeReofUk
Huber / Inglehart (1995)
PDRU
WhoGov
Schlager / Weisblatt
NeUk
added: Jan. 1, 2013, 7:17 p.m. — updated: June 5, 2023, 12:39 p.m.