Digital Object Maria Montessori, 1930, Vienna, Signed Photograph of Maria Montessori, 1930, Vienna, Signed.
Digital Object Maria Montessori, 1930, Vienna, Philip & Tacey Philip & Tacey Ltd reproduction of Lotte Meitner-Graf. Londres photograph of Maria Montessori, 1930, Vienna. Musée national de l’Éducation, 1979.36563.
