Columbia subject headings:
Artists--Spain--Catalonia--Correspondence.
Ponç, Joan, 1927-1984--Correspondence.
Harvard subject headings:
Artists--Spain--Catalonia--Correspondence.
Ponç, Joan, 1927-1984--Correspondence.
Princeton subject headings:
Artists--Spain--Catalonia--Correspondence.
Ponç, Joan, 1927-1984--Correspondence.