Title: Cities in the 21st century
Subjects: Zukunft, Cities and towns, Stedelijke ontwikkeling, Changement social, Social change, Prévision, Stadt, Villes, Vingt et unième siècle, Stadtentwicklung, Pronósticos, Forecasting, Prévisions, Forecasts, Twenty-first century, Siglo XXI, Sociale verandering, City planning, Cities and towns, research, Urban policy