Author
Programme for International Student Assessment
45
Organizace pro ekonomickou spolupráci a rozvoj
17
Organisation for Economic co-operation and Development (Paris). Programme for International Student Assessment
2
Kirsch, Irwin
1
Organisation for Economic Co-operation and Development (Paris). Programme for International Student Assessment
1
Salz, Susanne
1
Toledo Figueroa, Diana
1
UNESCO Institute for Statistics
1