Büttner, BettinaThomsen, Stephan L.2025-05-282010https://epflicht.bibliothek.uni-halle.de/handle/123456789/1884821910507urn:nbn:de:gbv:3:2-400062277177Online-Ressource (PDF-Datei: 36 S., 0,5 MB)enghttp://rightsstatements.org/vocab/InC/1.0/370Are we spending too many years in school? : causal evidence of the impact of shortening secondary school duration / Bettina Büttner; Stephan L. ThomsenBook