"États-Unis" . . "Economic zoning Bibliography United States." . . . . . . . . . . . . "A bibliographic guide to the economic regions of the United States : a report prepared for the Commission on Methods of Economic Regionalization of the International Geographical Union"@en . "A bibliographic guide to the economic regions of the United States : a report prepared for the Commission on Methods of Economic Regionalization of the International Geographical Union" . . . . "A bibliographic guide to the economic regions of the United Staates" . . . . . . . . "A bibliographic guide to the economic regions of the United States : a report prep. for the Commission on Methods of Economic Regionalization of the International Geographical Union"@en . . "A bibliographic guide to economic regions of the United States" . . "A bibliographic guide to the economic regions of the united states a report prepared for the commission on methods of economic regionalization of the international geographical union" . . "A Bibliographic guide to the economic regions of the United States. by Brian J. L. Berry and Thomas D. Hankins" . . . . "A bibliographic guide to the economic regions of the United States : a report prep. for the Commission on Methods of Econnomic Reggionalization of the International Geogr. Union" . . . . . . . . . . "A bibliographic guide to the economic regions of the United States : a report prepared for the Commission on Methods of Economic Regionalization of the Internal Geographical Union"@en . . . . "A bibliographic guide to the economic regions of the United States : a report prep. for the Commission on methods of economic regionalization of the International geographical union" . "A bibliographic guide to the economic regions of the United States : a report prepared for the Commission on Methods of Economic R egionalization of the International Geographical Union"@en . . . . . "A bibliographic guide to the economic regions of the United States : by Brian J. L. Berry and Thomas D. Hankins"@en . . "A bibliographic guide to the economic regions of the United States" . "A bibliographic guide to the economic regions of the United States"@en . . "Bibliography" . "Bibliography"@en . . . "A bibliographic guide to the economic regions of the United States : a report prepared for the Commissiion on Methods of Economic Regionalization of the International Geographical Union"@en . . . "Aménagement du territoire États-Unis Bibliographie." . . "United States" . .