Columbia subject headings:
Aquatic ecology--Minnesota--Voyageurs National Park.
Aquatic habitats--Minnesota--Voyageurs National Park.
Freshwater ecology--Minnesota--Voyageurs National Park.
Voyageurs National Park (Minn.)
Harvard subject headings:
Aquatic ecology--Minnesota--Voyageurs National Park.
Aquatic habitats--Minnesota--Voyageurs National Park.
Freshwater ecology--Minnesota--Voyageurs National Park.
Voyageurs National Park (Minn.)
Princeton subject headings:
Aquatic ecology--Minnesota--Voyageurs National Park.
Aquatic habitat--Minnesota--Voyageurs National Park.
Freshwater ecology--Minnesota--Voyageurs National Park.
Voyageurs National Park (Minn.)