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_aPerle, Eugene D. _945240 |
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_aThe demand for transportation : _bregional and commodity studies in the United States / _cby Eugene D. Perle |
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_aChicago : _bDept. of Geography, University of Chicago, _c1964 |
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_axx, 130 p. : _bmaps ; _c23 cm. |
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_aResearch paper (University of Chicago. Dept. of Geography) ; _vno.95 |
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_aFreight and freightage _zUnited States _xMathematical models |
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_a.b10517662 _b2021-05-28 _c2019-11-12 |
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