Columbia subject headings:
Christie, Agatha, 1890-1976--Characters.
Christie, Agatha, 1890-1976--Dictionaries.
Harvard subject headings:
Characters and characteristics in literature--Dictionaries.
Christie, Agatha, 1890-1976--Characters--Dictionaries.
Detective and mystery stories, English--Dictionaries.
Dictionaries.
Women and literature--England--Dictionaries.
Princeton subject headings:
Christie, Agatha, 1890-1976--Characters.
Christie, Agatha, 1890-1976--Dictionaries, indexes, etc.