Columbia subject headings:
Chesapeake Bay Watershed.
Ecological integrity--Chesapeake Bay (Md. and Va.)
Endangered ecosystems--Chesapeake Bay (Md. and Va.)
Estuarine ecology--Chesapeake Bay (Md. and Va.)
Harvard subject headings:
Chesapeake Bay Watershed.
Ecological integrity--Chesapeake Bay (Md. and Va.)
Endangered ecosystems--Chesapeake Bay (Md. and Va.)
Estuarine ecology--Chesapeake Bay (Md. and Va.)
Princeton subject headings:
Chesapeake Bay Watershed.
Estuarine ecology--Chesapeake Bay (Md. and Va.).