"eb871d12-d52a-4fa3-a1f7-25a15f44e07b" . "World Population and Human Capital in the Twenty-First Century"^^ . "2014"^^ . "978-0-19-870316-7" . "1072"^^ . "Oxford University Press"^^ . . . . . _:genid1 . _:genid1 . _:genid1 . _:genid1 . _:genid1 . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid3 . _:genid3 . _:genid3 . _:genid3 . _:genid3 . _:genid4 . _:genid4 . _:genid4 . _:genid4 .