24/09/1980 | Doc. 4603 | Committee Opinion Report on the activities of OECD in 1979 07/05/1969 | Doc. 2555 | Report Land use problems in town planning 07/05/1969 | Doc. 2557 | Report Responsibility of local authorities in the preservation of ancient buildings and historical or artistic sites 07/05/1968 | Doc. 2382 | Report Regional planning, a European problem