Roots of evaluation : the epidemiological basis for planning psychiatric services proceedings of the international symposium held at Mannheim, 26-29 July 1972 / [organised by the] World Psychiatric Association [and the] Deutsche Gesellschaft für Psychiatrie und Nervenheilkunde ; edited by J. K. Wing and H. Häfner.
Symposium on Psychiatric Epidemiology 1972 : Mannheim, Germany) | Date: 1973