1.
Intragenerational stability of postmaterialism in Germany, the Netherlands and the United States
2.
3.
EVS - European Values Study 1999 (release 2, Mai 2006) - Niederlande ; EVS - European Values Study 1999 (release 2, May 2006) - Netherlands
4.
5.
6.
7.
EVS - European Values Study 1999 - Niederlande ; EVS - European Values Study 1999 - Netherlands