2025-07-17https://epflicht.bibliothek.uni-halle.de/handle/123456789/30925ulbhal-hspe:3100909urn:nbn:de:gbv:3:2-3155393100909http://rightsstatements.org/vocab/InC/1.0/DJI-Impulse : the Bulletin of the German Youth Institute / [English Edition]Volume