Columbia subject headings:
Harvard subject headings:
Aquatic plants--Chesapeake Bay (Md. and Va.)--Identification.
Estuarine plants--Chesapeake Bay (Md. and Va.)--Identification.
Marine plants--Chesapeake Bay (Md. and Va.)--Identification.
Seagrasses--Chesapeake Bay (Md. and Va.)--Identification.
Princeton subject headings:
Aquatic plants--Chesapeake Bay (Md. and Va.)--Identification.
Estuarine plants--Chesapeake Bay (Md. and Va.)--Identification.
Marine plants--Chesapeake Bay (Md. and Va.)--Identification.
Seagrasses--Chesapeake Bay (Md. and Va.)--Identification.