THE SUCCESSFUL FIGHT TO IMPROVE THE HEALTH OF NEW YORK CITY
(AVERAGE LIFE IN 1866, THIRTY YEARS; IN 1912, SIXTY-SIX YEARS.
DEATH-RATE IN 1866, 34 PER THOUSAND; IN 1912, 14.11 PER THOUSAND)
The Century Illustrated Monthly Magazine (May 1913) Vol. LXXXVI. New Series: Vol. LXIV. May to October, 1913 · 第 55 / 166 题