Columbia subject headings:
Harvard subject headings:
Child psychology
Greek literature, Modern--History and criticism.
Play--Psychological aspects.
Vizyēnos, G. M. (Geōrgios M.), 1849-1896--Criticism and interpretation.
Princeton subject headings:
Child development.
Child psychology.
Dissertations, Academic--Germany.
Play--Psychological aspects.
Vizyēnos, G. M. (Geōrgios M.), 1849-1896--Criticism and interpretation.