TY  - BOOK
AU  - Lehrke Robert Gordon
AU  - Bergsma Daniel, 
TI  - X-linked mental retardation and verbal disability
SN  - 0-88372-057-4
U1  - 616.043 
PY  - 1974///
CY  - New York
PB  - Intercontinental Medical Book
KW  - Mental retardation
KW  - Verbal disability
ER  -