TY  - BOOK
AU  - Walker,David Addison
TI  - The IEA six subject survey: an empiracal study education in twenty-one countries 
T2  - International studies in evaluation
SN  - 0470150092
PY  - 1976///
CY  - Stockholm
PB  - Almqvist Wiksell
KW  - Educational tests and measurements
KW  - Grading and marking (Students)
KW  - Comparative education
N1  - 'A Halsted Press book.'; Includes bibliographies and index
ER  -