Columbia subject headings:
New York (N.Y.)--Social conditions.
Public health--New York (State)--New York.
Unemployed--New York (State)--New York.
Harvard subject headings:
Health surveys.
New York (N.Y.)--Social conditions
Public health--New York (State)--New York
Sanitation--New York (State)--New York.
Unemployed--New York (State)--New York
Princeton subject headings:
Health surveys.
New York (N.Y.)--Sanitary affairs.
New York (N.Y.)--Social conditions.
Unemployed--New York (State)--New York.