TY  - JOUR 
T1  - Cytogenetic and molecular contributions to the study of mental retardation
JO  - Genetics and Molecular Biology
A1  - Llerena Jr., Juan C.
A1  - Almeida, José Carlos Cabral de
SN  - 1415-4757
UL  - 10.1590/S1415-47571998000200018
VL  - 21 
Y1  - 1998
PB  - Brasil 
ER  -