Columbia subject headings:
Emblem books, Dutch--Congresses.
Emblems--Netherlands--Congresses.
Harvard subject headings:
Benelux countries--Imprints--Congresses.
Conference papers and proceedings.
Emblem books, Dutch--Benelux countries--Congresses.
Emblem books--Congresses.
Emblems--Benelux countries--Congresses.
Princeton subject headings:
Emblem books, Dutch--Benelux countries--Congresses.
Emblem books--Congresses.
Emblems--Benelux countries--Congresses.