no media
Introduction to regional science / Walter Isard.- Englewood Cliffs (N.J.) : Prentice Hall, c1975.- XXII, 506 p. ; 24 cm.
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Methods of regional analysis : an introduction to regional science / by Walter Isard.- New York : M.I.T. press, c1960.- XXIX, 784 p., [2] c. di tav. : ill. ; 24 cm..- The regional science studies series 4