Columbia subject headings:
Chesapeake Bay Region (Md. and Va.)--Economic conditions.
Chesapeake Bay Region (Md. and Va.)--Environmental aspects.
Engineers--Maryland--Baltimore.
United States. Army. Corps of Engineers. Baltimore District.
Harvard subject headings:
Chesapeake Bay Region (Md. and Va.)--Economic conditions.
Chesapeake Bay Region (Md. and Va.)--Environmental aspects.
Engineers--Maryland--Baltimore.
United States. Army. Corps of Engineers. Baltimore District
Princeton subject headings: