Columbia subject headings:
Harvard subject headings:
Chesapeake Bay Region (Md. and Va.)--History
Environmental policy--Chesapeake Bay Region (Md. and Va.)--History.
Marine pollution--Chesapeake Bay (Md. and Va.)--Public opinion--History.
Marine pollution--Environmental aspects--Chesapeake Bay (Md. and Va.)--History.
Marine pollution--Health aspects--Chesapeake Bay (Md. and Va.)--History.
Water--Pollution--Chesapeake Bay Region (Md. and Va.)--Public opinion--History.
Water--Pollution--Environmental aspects--Chesapeake Bay Region (Md. and Va.)--History.
Water--Pollution--Health aspects--Chesapeake Bay Region (Md. and Va.)--History.
Princeton subject headings:
Chesapeake Bay Region (Md. and Va.)--History.
Environmental policy--Chesapeake Bay Region (Md. and Va.)--History.
Marine pollution--Chesapeake Bay (Md. and Va.)--Public opinion--History.
Marine pollution--Environmental aspects--Chesapeake Bay (Md. and Va.)--History.
Marine pollution--Hygienic aspects--Chesapeake Bay (Md. and Va.)--History.
Water--Pollution--Chesapeake Bay Region (Md. and Va.)--Public opinion--History.
Water--Pollution--Environmental aspects--Chesapeake Bay Region (Md. and Va.)--History.
Water--Pollution--Hygienic aspects--Chesapeake Bay Region (Md. and Va.)--History.