[en] [Gutenberg 44728] • Kinship and Social Organisation Wentworth Press
[en] [Gutenberg 12955] • Consanguineous Marriages in the American Population Quality Classics
[en] [Gutenberg 44728] • Kinship and Social Organisation Wentworth Press
[en] [Gutenberg 12955] • Consanguineous Marriages in the American Population Quality Classics