Columbia subject headings:
Harvard subject headings:
Ground squirrels--Behavior--Congresses
Ground squirrels--Congresses.
Mammals--Behavior--Congresses
Social behavior in animals--Congresses
Princeton subject headings:
Ground squirrels--Behavior--Congresses.
Ground squirrels--Congresses.
Mammals--Behavior--Congresses.
Social behavior in animals--Congresses.