Columbia subject headings:
Agricultural pollution--Chesapeake Bay (Md. and Va.)
Nutrient pollution of water--Chesapeake Bay (Md. and Va.)
Sewage--Purification--Nutrient removal.
Water quality management--Chesapeake Bay (Md. and Va.)
Water--Pollution--Chesapeake Bay (Md. and Va.)
Harvard subject headings:
Agricultural pollution--Chesapeake Bay (Md. and Va.)
Nutrient pollution of water--Chesapeake Bay (Md. and Va.)
Sewage--Purification--Nutrient removal
Water quality management--Chesapeake Bay (Md. and Va.)
Water--Pollution--Chesapeake Bay (Md. and Va.)
Princeton subject headings:
Agricultural pollution--Chesapeake Bay (Md. and Va.).
Nutrient pollution of water--Chesapeake Bay (Md. and Va.).
Sewage--Purification--Nutrient removal.
Water quality management--Chesapeake Bay (Md. and Va.).
Water--Pollution--Chesapeake Bay (Md. and Va.).