TY  - BOOK
AU  - Drew, Clifford J.
AU  - Hardman, Michael L. 
AU  - Bluhm, Harry P. 
AU  - Blatt, Burton 
TI  - Mental retardation: : social and educational perspectives
SN  - 0801614627
U1  - 610.736 8 
PY  - 1977///
CY  - St Louis
PB  - : Mosby
KW  - Retardo mental
KW  - Impedidos
N1  - Incluye referencias bibliográficas; Social issues -- Educational and vocational issues
ER  -