Columbia subject headings:
Mammals--Michigan--Isle Royale National Park.
Predation (Biology)
Wolves.
Harvard subject headings:
Isle Royale National Park (Mich.)
Mammals--Michigan--Isle Royale National Park.
Predation (Biology)
Wolves
Princeton subject headings:
Isle Royale National Park (Mich.)
Predation (Biology)
Wolves--Ecology--Michigan--Isle Royale National Park.