Note 21 — Chapter I · The First Three Years
Alexis Frederick Lange translation
Perez, “The First Three Years of Childhood.”
[22] Preyer, (a) “Mental Development in the Child,” (b) “The Development of the Intellect,” (c) “The Senses and the Will.”
[23] Baldwin, (a) “Mental Development in the Child and the Race,” (b) “Social and Ethical Interpretations.”