Columbia subject headings:
Historic sites--Conservation and restoration--Scotland--Congresses.
Historic sites--Interpretive programs--Scotland--Congresses.
Landscape architecture--Scotland--Congresses.
Scotland--Antiquities--Conservation and restoration--Congresses.
Harvard subject headings:
Historic sites--Conservation and restoration--Scotland--Congresses.
Historic sites--Interpretive programs--Scotland--Congresses.
Landscape architecture--Scotland--Congresses.
Scotland--Antiquities--Conservation and restoration--Congresses.
Princeton subject headings:
Historic sites--Scotland--Congresses.
Landscape architecture--Scotland--Congresses.