English Name
Time
Details from Source
PLD
ParlGov
Wikipedia
Wikipedia tags
DPI
Huber / Inglehart (1995)
PL
EU-NED
KUREP (2012)
MAPP
PIP
NLP
added: March 16, 2015, 4:11 p.m. — updated: March 12, 2021, 11:15 a.m.