Columbia subject headings:
Harvard subject headings:
Assateague Island National Seashore (Md. and Va.)
Chincoteague pony--Behavior--Assateague Island (Md. and Va.)
Chincoteague pony.
Mammals--Behavior
Mammals--Behavior--Assateague Island National Seashore (Md. and Va.)
Ponies--Behavior
Princeton subject headings:
Assateague Island National Seashore (Md. and Va.)
Chincoteague pony.
Mammals--Assateague Island (Md. and Va.)--Behavior.
Mammals--Behavior.
Ponies--Behavior.