Abstract
References
1.
Bott
E
. (1957 ) Family and Social Network . London
2.
Gann
E
. (1945 ) Reading Difficulty and Personality Organization . New York
3.
Gates
A
. (1941 ) J. genet. Psychol.
59 , 77
4.
Miller
A D
Margolin
J B
Yolles
S F
. (1957 ) Amer. J. publ. Hlth
47 , 1250
5.
Paulett
J D
Tuckman
E
. (1958 ) Brit. med. J.
ii , 1266
6.
Preston
M I
. (1939 ) Child Develpm.
10 , 173
7.
Staver
N
. (1953 ) Amer. J. Orthopsychiat.
23 , 131
8.
Stewart
R S
. (1950 ) Amer. J. Orthopsychiat.
20 , 410
9.
Tuckman
E
. (1963 ) MD Thesis, London
10.
Wardle
C J
. (1961 ) Brit. med. J.
ii , 349