˜Derœ Betrieb  Jg. 75. 2022 

<br/><br/><label>ISSN: </label>0005-9935 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>1257260693  DE-101 
<br/><br/><label>Dewey Class. No.: </label>650