Columbia subject headings:
Cephalopoda--Congresses.
Young, J. Z. (John Zachary), 1907-1997.
Harvard subject headings:
Cephalopoda--Congresses.
Young, J. Z. (John Zachary), 1907-1997.
Princeton subject headings:
Cephalopoda--Congresses.
Young, J. Z. (John Zachary), 1907-1997.