Columbia subject headings:
Puget Sound (Wash.)--Economic conditions.
Regional planning--Washington (State)--Puget Sound.
Harvard subject headings:
Puget Sound (Wash.)--Economic conditions.
Puget Sound Region (Wash.)--Economic conditions.
Regional planning--Washington (State)--Puget Sound.
Princeton subject headings:
Puget Sound (Wash.)--Economic conditions.
Puget Sound Region (Wash.)--Economic conditions.
Regional planning--Washington (State)--Puget Sound.