TY  - BOOK
AU  - Tredgold,Alfred Frank
AU  - Tredgold,Roger Francis
AU  - Soddy Kenneth
TI  - Tredgold's mental retardation
SN  - 0702002879
AV  - WM300 
U1  - 616.85/88 
PY  - 1970///
CY  - London
PB  - Baillière, Tindall & Cassell
KW  - Mental retardation
KW  - Mental Retardation
N1  - First published in 1908 under title: Mental deficiency (amentia); Bibliography: p. [477]-486
ER  -