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Variations in perinatal mortality with social and economic factors and prenatal care
Zackrisson, Uno; Kjessler, Åke - 1956
Persistent link: https://www.econbiz.de/10000618124
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Undersökningar rörande barn i ofullständiga familjer
Hyrenius, Hannes; Zackrisson, Uno - 1955
Persistent link: https://www.econbiz.de/10000315230
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Utom äktenskap födda barn i Göteborg 1928 - 1954
Hyrenius, Hannes; Zackrisson, Uno - 1955
Persistent link: https://www.econbiz.de/10000315231