Columbia subject headings:
Ortiz de Elguea, Carmelo, 1944---Exhibitions.
Zumeta Etxeberria, Jose Luis, 1939---Exhibitions.
Harvard subject headings:
Ortiz de Elguea, Carmelo, 1944---Exhibitions.
Zumeta Etxeberria, Jose Luis, 1939---Exhibitions.
Princeton subject headings:
Ortiz de Elguea, Carmelo, 1944---Exhibitions.
Zumeta Etxeberria, Jose Luis, 1939---Exhibitions.