TY  - BOOK
AU  - Husén, Torsten,
CN  - QA11
CN  - QA11
CY  - Stockholm,
CY  - New York,
DA  - [1967]
ID  - 58433
KW  - Mathematical ability.
KW  - Mathematics
KW  - Comparative education.
N1  - At head of title: International Project for the Evaluation of Educational Achievement (IEA) Phase I.
PB  - Almqvist & Wiksell;
PB  - Wiley
PP  - Stockholm,
PP  - New York,
PY  - [1967]
T1  - International study of achievement in mathematics;a comparison of twelve countries.
TI  - International study of achievement in mathematics;a comparison of twelve countries.
ER  -