TY  - BOOK
AU  - Isaacs,Susan
AU  - Isaacs,Nathan
TI  - Intellectual growth in young children
T2  - Her The behaviour of young children
U1  - 155.4 
PY  - 1930///
CY  - London
PB  - G. Routledge
KW  - Age and intelligence
KW  - Educational psychology
N1  - With an appendix on children's "why" questions by Nathan Isaacs
ER  -