vol.
Conţine: Transactions of the Seventh International Congress of Hygiene and Demography, London, august 10th-17th, 1891 . Vol. 5, Section V . ─ London : Eyre and Spottiswoode, 1892, 128 p.
Conţine: Transactions of the Seventh International Congress of Hygiene and Demography, London, august 10th-17th, 1891 . Vol. 10. Division II, Demography . ─ London : Eyre and Spottiswoode, 1892, 346 p.
Conţine: Transactions of the Seventh International Congress of Hygiene and Demography, London, august 10th-17th, 1891 . Vol. 13, Miscellanea (Special meetings, reports, official lists, etc.) . ─ London : Eyre and Spottiswoode, 1893, 416 p.
Conţine: Transactions of the Seventh International Congress of Hygiene and Demography, London, august 10th-17th, 1891 . Vol. 7, Section VII . ─ London : Eyre and Spottiswoode, 1892, 268 p.
Conţine: Transactions of the Seventh International Congress of Hygiene and Demography, London, august 10th-17th, 1891 . Vol. 2, Section II . ─ London : Eyre and Spottiswoode, 1892, 344 p.
Conţine: Transactions of the Seventh International Congress of Hygiene and Demography, London, august 10th-17th, 1891 . Vol. 1, The opening meeting of the congress . ─ London : Eyre and Spottiswoode, 1892, 408 p.