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PIAAC 2012: Die wichtigsten Ergebnisse im Überblick [working paper]
Source: Waxmann, 2013
PIAAC 2012: Overview of the Main Results [working paper]
Source: Waxmann, 2013
Degrees of competency: the relationship between educational qualifications and adult skills across countries [journal article]
Source: Large-scale Assessments in Education, 5 (2017). p.34