Sleutelen aan de stedelijke bevolkingssamenstelling.. (The question of the composition of urban population)
Analysis of the problem of a balanced population composition in the great urban agglomerations. In the seventies there is a trend towards more one person households, more people with low incomes and a growing percentage of ethnic minorities
in the central parts of the cities. On the other side high income groups migrate to the suburbs and the rural areas. Much attention is paid to the negative effects of the unbalanced urban growth of Amsterdam, Rotterdam, The Hague and Utrecht, and to the means