The gravity equation in international trade /
Thesis (Ph.D) - University of Wisconsin - Madison, 1981
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[s l] : University of Wisconsin - Madison,
1981
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Thesis (Ph.D) - University of Wisconsin - Madison, 1981
Main Author: | |
---|---|
Format: | |
Published: |
[s l] : University of Wisconsin - Madison,
1981
|
Subjects: |