Stephen Smith and health of immigrants 1850 to 1865.
D004641:Emigration and Immigration / Q000266:history*; D006306:Health Surveys; D006666:History of Medicine; D006801:Humans; D009519:New York City; D011634:Public Health / Q000266:history*; D012498:Sanitary Engineering / Q000266:history; D012499:Sanitation / Q000266:history