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Number of items: 2.
2019
Obersneider, Monika 
ORCID: 0000-0003-1004-9580, Janssen, Jan-Christoph and Wagner, Michael ORCID: 0000-0003-2589-6440
(2019).
Regional Sex Ratio and the Dissolution of Relationships in Germany.
European Journal of Population, 35 (4).
pp. 825-849.
Heidelberg ; Dordrecht:
Springer.
ISSN 0168-6577
2017
Janssen, Jan-Christoph
(2017).
Why coffee and not honey – untangling the limits and opportunities for certifying the ‘moral quality’ of products.
PhD thesis, Universität zu Köln.
