Air Travel,Spatial Structure,and Gravity Models. Wesley H. Long. The Annals of Regional Science,Vol. IV,No. 2,December 1970,pp. 97-107. The Annals of Regional Science,Department of Economics,Western Washington State College,Bellingham,Washington 98225. $9 per year

Air Travel,Spatial Structure,and Gravity Models. Wesley H. Long. The Annals of Regional Science,Vol. IV,No. 2,December 1970,pp. 97-107. The Annals of Regional Science,Department of Economics,Western Washington State College,Bellingham,Washington 98225. $9 per year

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