Columbia subject headings:
Harvard subject headings:
Bryozoa--Great Britain--Identification.
Bryozoa--Identification.
Cheilostomata--Great Britain.
Cheilostomata--Identification.
Princeton subject headings:
Bryozoa--Great Britain--Identification.
Bryozoa--Identification.
Cheilostomata--Great Britain.
Cheilostomata--Identification.