Columbia subject headings:
Negrín, Juan.
Prime ministers--Spain--Biography.
Spain--Politics and government--1931-1939--Sources.
Spain--Politics and government--1931-1939.
Harvard subject headings:
Negrín, Juan, 1892-1956.
Physicians--Spain--Biography
Prime ministers--Spain--Biography
Spain--History--Republic, 1931-1939.
Spain--Politics and government--1931-1939.
Princeton subject headings:
Negrín, Juan, 1892-1956.
Physicians--Spain--Biography.
Prime ministers--Spain--Biography.
Spain--History--Republic, 1931-1939.
Spain--Politics and government--1931-1939.