Columbia subject headings:
Water-saturated sites (Archaeology)--England--Congresses.
Wood--Moisture--Congresses.
Wood--Preservation--Congresses.
Harvard subject headings:
Antiquities--Collection and preservation--Congresses
Archaeology--Methodology--Congresses
Water-saturated sites (Archaeology)--England--Congresses.
Wood--Moisture--Congresses.
Wood--Preservation--Congresses.
Princeton subject headings: