1.
Personal circulation in the Dutch second chamber 1888-1993: towards institutionalization and professionalization and then?
2.
The striking Netherlands: time series analysis and models of socio-economic development and labour disputes, 1850-1995
An empirical study of the distribution of crops in agricultural land in Belgium: 1900-1939
Drogenkonsum, Drogenprobleme und Drogenpolitik in Europa: Geschichte und aktuelle Entwicklungen im internationalen Vergleich
3.