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Q35412608-297EF199-C1CB-4C5D-AF63-B4998FF29562
Q35412608-297EF199-C1CB-4C5D-AF63-B4998FF29562
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Statement
http://www.wikidata.org/entity/statement/Q35412608-297EF199-C1CB-4C5D-AF63-B4998FF29562
Secular trends in sex ratios at birth in North America and Europe over the second half of the 20th century
P2860
Q35412608-297EF199-C1CB-4C5D-AF63-B4998FF29562
BestRank
Statement
http://www.wikidata.org/entity/statement/Q35412608-297EF199-C1CB-4C5D-AF63-B4998FF29562
rank
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type
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wasDerivedFrom
134d3a621155a3d82136899341808bc6d51e0dde
P2860
Influence of parental and biological factors on the male birth fraction in the United States: an analysis of birth certificate data from 1964 through 1988.