Columbia subject headings:
Harvard subject headings:
Biographies
Education--Philosophy
Educators--Sweden--Biography.
Key, Ellen, 1849-1926
Philosophers--Sweden--Biography.
Philosophy, Swedish
Social reformers--Sweden--Biography.
Princeton subject headings:
Child development.
Educators--Sweden--Biography.
Key, Ellen, 1849-1926--Criticism and interpretation.
Women social reformers--Sweden--Biography.