Columbia subject headings:
Ramón y Cajal, Santiago, 1852-1934--Congresses.
Science--Social aspects--Spain--Congresses.
Science--Spain--History--Congresses.
Harvard subject headings:
Princeton subject headings:
Ramón y Cajal, Santiago, 1852-1934--Congresses.
Science--Social aspects--Spain--Congresses.
Science--Spain--History--Congresses.