World Health Organization , Berg J. M., World Health Organization , International Association for the Scientific Study of Mental Deficiency. Congress (7th: 1985: New Delhi, India)
Science and service in mental retardation
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- London Methuen 1986
- 475 p. 25 cm.
- .
Based on: Proceedings of the Seventh Congress of the International Association for the Scientific Study of Mental Deficiency (IASSMD) Co-sponsored by the World Health Organization New Delhi, India 24-28 March, 1985