Legal full-text edition
PISA 2015
NaturwissenschaftenSchulleistungsuntersuchungPISAMathematische KompetenzOECD-StudieLesekompetenzSchülerbefragung
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Public-domain status shown for GLOBAL. DOAB open-access record with explicit license: CC-BY-NC-SA
Public-domain status shown for GLOBAL. DOAB open-access record with explicit license: CC-BY-NC-SA