Columbia subject headings:
Biological products--Congresses.
Fishes--Diseases--Diagnosis--Congresses.
Fishes--Diseases--Prevention--Congresses.
Harvard subject headings:
Biological products--Congresses.
Fishes--Diseases--Congresses.
Fishes--Diseases--Diagnosis--Congresses.
Fishes--Diseases--Prevention--Congresses.
Serology--Congresses.
Vaccines--Congresses
Princeton subject headings: