Towards the Improvement of the Efficiency and Effectiveness of Tourism Planning and Development at the Regional Level: Planning, Organisations and Networks. The Case of Portugal C. M. M. Costa Publication Year of Publication: 1996 Costa, C. M. M. (1996). Towards the Improvement of the Efficiency and Effectiveness of Tourism Planning and Development at the Regional Level: Planning, Organisations and Networks. The Case of Portugal. Identifiers Other Numbers: 25541101 Locators Alternative titles Google ScholarBibTeXRIS