30 books • 9 series
Psicologia Medica (Historia) (Psicologia, Psiquiatria y Psicoanalisis)
Homo Ludens Essai sur la fonction sociale du jeu
Erasmus and the Age of Reformation (Princeton Legacy Library)
Men and Ideas (Princeton Legacy Library)
Homo Ludens (Athenaeum Boekhandel Canon)
The Waning of the Middle Ages