Neglected classics: Waelder's "Problem of the genesis of psychical conflict in earliest infancy".
D003220:Conflict, Psychological; D005201:Fantasy; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D011572:Psychoanalysis / Q000266:history; D011574:Psychoanalytic Theory; D002666:Psychology, Child; D014473:Unconscious, Psychology