TY  - BOOK
AU  -  Foshley,Arthur W.
AU  -  Thorndike,Robert Ladd
TI  -  Educational achievement of thirteen-year olds in twelve countries : :  results of an international research project, 1969-61 / 
U1  -  P 372 FOS 
PY  - 1962///
CY  -  Hamburg : 
PB  -  Unesco, Institute of Education, 
KW  -  Academic achievement
ER  -