Columbia subject headings:
Invertebrates--Korea (South)--Tok Island--Pictorial works.
Marine animals--Korea (South)--Tok Island--Pictorial works.
Mollusks--Korea (South)--Tok Island--Pictorial works.
Tok Island (Korea)--Pictorial works.
Harvard subject headings:
Invertebrates--Korea (South)--Tok Island--Pictorial works.
Marine animals--Korea (South)--Tok Island--Pictorial works.
Mollusks--Korea (South)--Tok Island--Pictorial works.
Tok Island (Korea)--Pictorial works.
Princeton subject headings:
Mollusks--Korea (South)--Tok Island--Pictorial works.
Tok Island (Korea)--Pictorial works.