Columbia subject headings:
Harvard subject headings:
Arquivo/Biblioteca Ephemera--Catalogs.
Campaign paraphernalia--Portugal--Catalogs.
Partido Popular Democrático (Portugal)--Collectibles--Catalogs.
Political collectibles--Portugal--Catalogs.
Stickers--Portugal--Catalogs.
Princeton subject headings:
Arquivo/Biblioteca Ephemera--Catalogs.
Campaign paraphernalia--Portugal--Catalogs.
Catalogs.
Partido Popular Democrático (Portugal)--Collectibles--Catalogs.
Political collectibles--Portugal--Catalogs.
Stickers--Portugal--Catalogs.