TY  - GEN
AU  - De Jong J M, Berg J.M.
TI  - Proceedings of the Seventh Congress on International Association for the Scientific Study of Mental Deficiency (1985 : New Delhi): Science and service in mental retardation
SN  - 0-416-40650-5
PY  - 1985///
CY  - London : 
PB  - Methuen
KW  - Mental retardation
KW  - Congresses
ER  -