RT Article T1 Current developments in the understanding of mental retardation. 1. Biological and phenomenological perspectives JF Journal of the American Academy of Child and Adolescent Psychiatry VO 30 IS 5 SP 707 OP 719 A1 Bregman, Joel D. A1 Hodapp, Robert M. A2 Hodapp, Robert M. LA English YR 1991 UL https://krimdok.uni-tuebingen.de/Record/1640165509 K1 Retardierung