Leitfaden für Gemeindebehörden und Planungsinteressierte zur Planungstätigkeit in den Gemeinden gemäss dem Zürcher Planungs- und Baugesetz vom 7. September 1975Regulatory analysis - civil aviation management plan : adopted February 24, 1988 : issued to the Minister of Housing, Spatial Planning and the Environment dated March 4, 1988Regulatory analysis - recreation management plan Wadden Sea : adopted February 24, 1988 : issued to the Minister of Housing, Spatial Planning and the Environment dated March 4, 1988Reports of the fifth monument day, held on October 4, 1930 at Arnhem and of the sixth monument day, held on June 6, 1931 at GroningenAn outline of planning lawAn outline of planning law [1960]