Science and service in mental retardation :
Science and service in mental retardation : proceedings of the Seventh Congress of the International Association for the Scientific Study of Mental Deficiency, New Delhi, India, 24-28 March, 1985 /
edited by J. M. Berg ; technical editor, Jean M. De Jong.
- London : Methuen, 1986.
- 475 p.
Co-sponsored by the World Health Organization.
0416406505
Mental retardation--congresses.
WM 300
Co-sponsored by the World Health Organization.
0416406505
Mental retardation--congresses.
WM 300