Columbia subject headings:
Invertebrates--France--Normandy.
Invertebrates--Pictorial works.
Harvard subject headings:
Invertebrates--Anatomy
Invertebrates--France--Normandy--Anatomy.
Marine invertebrates--France--Normandy--Anatomy.
Princeton subject headings:
Invertebrates--Anatomy.
Invertebrates--France--Normandy--Anatomy.
Marine invertebrates--France--Normandy--Anatomy.