Columbia subject headings:
Animal communication--Congresses.
Mammals--Behavior--Congresses.
Whales--Behavior--Congresses.
Harvard subject headings:
Animal communication--Congresses
Mammals--Behavior--Congresses
Whales--Behavior--Congresses.
Princeton subject headings:
Animal communication--Congresses.
Mammals--Behavior--Congresses.
Whales--Behavior--Congresses.