1.
Culturele Veranderingen in Nederland 1978 - CV'78 ; Cultural changes in the Netherlands 1978 - CV'78
2.
3.
4.
5.
Culturele Veranderingen in Nederland 1981 - CV'81 ; Cultural changes in the Netherlands 1981 - CV'81
Culturele Veranderingen in Nederland 1980 - CV'80 ; Cultural changes in the Netherlands 1980 - CV'80