2025-07-17https://epflicht.bibliothek.uni-halle.de/handle/123456789/30923ulbhal-hspe:3100903urn:nbn:de:gbv:3:2-3155173100903http://rightsstatements.org/vocab/InC/1.0/DJI-Impulse : the Bulletin of the German Youth Institute / [English Edition]Volume