Logo von <a href="https://de.wikipedia.org/wiki/ALK-Abell%C3%B3" class="extiw" title="de:ALK-Abelló">ALK-Abelló</a>
Unknown author<span style="display: none;">Unknown author</span>
Vektordaten: <a rel="nofollow" class="external free" href="https://www.alk.net/at/sites/www.alk.at/files/downloads/alk_waesserig_sq_-_info_fuer_fachkreise_und_pat_-_2011.pdf">https://www.alk.net/at/sites/www.alk.at/files/downloads/alk_waesserig_sq_-_info_fuer_fachkreise_und_pat_-_2011.pdf</a>