Jean Piaget books in order
12 books in the catalogue, about 58 hours of reading in all; the shortest takes 3 hours and the longest 8 hours.
12 standalone books in the catalogue.
Standalone books
The Language and Thought of the Child 4.6 h 
The Child's Conception of the World 7.3 h 
Psychologie de L'intelligence 3.3 h 
Play, Dreams, and Imitation in Childhood 5.4 h 
The Origin of Intelligence in the Child 7.7 h 
Biology and Knowledge 7.0 h 
Six Psychological Studies 3.1 h 
Psychologie de L'enfant 3.2 h 
The Science of Education and the Psychology of the Child 3.4 h 
Psychology and Epistemology 3.1 h 
To Understand Is to Invent 2.7 h 
El Nacimiento de La Inteligencia En El Nino 7.3 h