_:Beee1eb762e52d69ed905be3c8585122a . _:Beee1eb762e52d69ed905be3c8585122a . _:Beee1eb762e52d69ed905be3c8585122a "2023-05-19"^^ . _:Beee1eb762e52d69ed905be3c8585122a . _:Beee1eb762e52d69ed905be3c8585122a . _:Beee1eb762e52d69ed905be3c8585122a "068087454" . _:Beee1eb762e52d69ed905be3c8585122a . _:Beee1eb762e52d69ed905be3c8585122a . _:Beee1eb762e52d69ed905be3c8585122a . "Preston, Samuel H." . "Samuel H." . . "B0402770: Population Studies Center, Univ. of Pennsylvania" . _:Beee1eb762e52d69ed905be3c8585122a . "Samuel H. Preston" . . "Preston" . . .