Streekplanning in onzekerheid : deel 1Om het behoud van de natuur : streekplanning in het Gooi 1920-1943Strategic planning in the Netherlands since 1900 : a bibliography of works in EnglishTwo forms of evaluation : paper written for the 1st conference of the European chapter of the International association for impact assessment on "Impact forecasting, methods, results, experiences" held at Leiden and Delft, The Netherlands, on June 16-17, 1988Groene verbindingen in de Zuidplaspolder: nieuwe kansen voor stad en land