Isard, W. (1998). Methods of interregional and regional analysis. Ashgate.
Tohutoru Kātū Chicago (17th ed.)Isard, Walter. Methods of Interregional and Regional Analysis. Aldershot: Ashgate, 1998.
Tohutoro MLA (9th ed.)Isard, Walter. Methods of Interregional and Regional Analysis. Ashgate, 1998.
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