TY  - BOOK
AU  - Penrose,L.S.
TI  - A clinical and genetic study of 1280 cases of mental defect,
AV  - RC602 .P43
PY  - 1938///
CY  - London
PB  - H. M. Stationery off.
KW  - Mental retardation
KW  - Case studies
N1  - At head of title: ...  Privy council.  Medical research council; "List of references": p. 71-73; "List of publications from the Research department, Royal eastern counties' institution, Colchester": p. 74-75
ER  -