TY  - BOOK
AU  - Berg,Joseph Maurice
AU  - De Jong,Jean M.
ED  - International Association for the Scientific Study of Mental Deficiency.
ED  - World Health Organization.
TI  - 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 
SN  - 0416406505
PY  - 1986///
CY  - London
PB  - Methuen
KW  - Mental retardation
KW  - congresses
N1  - Co-sponsored by the World Health Organization
ER  -