National and regional policies as framewor ks for local planning in the United States and Canada, the Seminar on National and Regional Planning as Frameworks for Local Planning, United Nations Econom ic Commission for Europe, May 1975 / L.O. Gertler et al.
Ontario’s Niagara Escarpment (Ontario, Canada) : implementing the biosphere reserve concept in a highly developed region / prepared at the request of the United Nations Educational, Scientific and Cultural Organization (UNESCO) for presentation by the Niagara Escarpment Commission at the International Conference on Biosphere Reserves held in Sevilla, Spain, March 20-25, 1995