Transactions of the Fifteenth International Congress on Hygiene and Demography, Washington, September 23-28, 1912

---

Transactions of the fifteenth International congress on hygiene and demography v. 4

---

Transactions of the fifteenth International congress on hygiene and demography v. 5

---

Transactions on the Fifteenth International Congress on Hygiene and Demography

---

Transactions of the fifteenth International congress on hygiene and demography

---

Transactions of the fifteenth International congress on hygiene and demography v. 6

---

Transactions of the fifteenth International congress on hygiene and demography v. 1

---

Transactions of the Fifteenth International Congress on Hygiene and Demography, Washington, September 23-28, 1912: Section V: Control of infectious diseases. Section VI: State and municipal hygiene

---

Report on the Statistics of Labor

---

Catalogue of the Public Documents of the ... Congress and of All Departments of the Government of the United States for the Period from ... to ...

---