TY  - BOOK
AU  -  Deregowski,J.B.
AU  -  Serpell,Robert
TI  -  Performance on a sorting task with various modes of representation : :  a cross-cultural experiment / 
PY  - 1971///
CY  -  Lusaka : 
PB  -  Human Development Research unit, 
KW  -  Culture diffusion
KW  -  Color
KW  -  Psychology
KW  -  Mental tests
ER  -