Columbia subject headings:
Elections--Peru--History--20th century--Statistics.
Executive departments--Peru--History--20th century--Registers.
Legislative bodies--Peru--History--20th century--Registers.
Harvard subject headings:
Elections--Peru--History--20th century--Statistics.
Executive departments--Peru--History--20th century--Registers.
Legislative bodies--Peru--History--20th century--Registers.
Princeton subject headings:
Elections--Peru--History--20th century--Statistics.
Executive departments--Peru--History--20th century--Registers.
Legislative bodies--Peru--History--20th century--Registers.