Data Documentation 36, 167 S.
Joachim R. Frick, Olaf Groh-Samberg, Henning Lohmann
2008
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DOI:
https://dx.doi.org/10.18723/diw_ddc:2008-36
Frei zugängliche Version: (econstor)
http://hdl.handle.net/10419/129246
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