1.
Culturele Veranderingen in Nederland 1979 - CV'79 ; Cultural changes in the Netherlands 1979 - CV'79
Culturele Veranderingen in Nederland 2002 - CV'02 ; Cultural changes in the Netherlands 2002 - CV'02
Culturele Veranderingen in Nederland 1996 - CV'96 ; Cultural changes in the Netherlands 1996 - CV'96