TY  - BOOK
AU  - Penrose,L.S.
TI  - The biology of mental defect
SN  - 0283352655
PY  - 1966///
CY  - London
PB  - Sidgwick & Jackson
KW  - Medical genetics
KW  - Mental retardation
N1  - Bibliography : p. 405-413
ER  -