@article{FriesWoolf1953, author = {M. E. Fries and P. J. Woolf}, title = {Some Hypotheses on the Role of the Congenital Activity Type in Personality Development}, journal = {R. S. Eissler et al. (Eds.), The Psychoanalytic Study of the Child, Vol. VIII, New York (International Universities Press) 1953, pp. 48-62.}, year = {1953}, }