TY  - BOOK
AU  -  Clarke, ANN M.
AU  - Crarke, Alan D.B. 
AU  -  Berg, Joseph M.
TI  - Mental deficiency the changing outlook
SN  - 041638160
U1  - 616.8 
PY  - 1958///
CY  - London
PB  - Methuen AND cO.
KW  - Mental retardation
KW  - Mental efficiency
N1  - Includes bibliographical reference and index
ER  -