Extent: | 21 Bl. graph. Darst. |
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Series: | Working papers / Faculté des Sciences Économiques et Sociales, Université de Fribourg. - Fribourg. - Vol. 383 |
Type of publication: | Book / Working Paper |
Language: | French |
Notes: | Literaturverz. Bl. 20 |
Source: |
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