Rainer Walke

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Max-Planck-Institut für Demografische Forschung

Walke@demogr.mpg.de

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20 August 2002 | descriptive finding

Twins or two single children

Rainer Walke

Volume: 7 Article ID: 9
Pages: 379–390
DOI: 10.4054/DemRes.2002.7.9