Kashfiyot
Xizmatlar
Identifikatsiya
Ishlab chiquvchilar uchun
Ekotizim
3 ta ish
Leuphana University of Lüneburg
Ronald Inglehart, Christian Welzel
Jan Delhey, Stephanie Hess, Klaus Boehnke +4
Ronald Inglehart, Roberto Foa, Christopher Peterson +1