Authors: Christoph Klören

Published in Zitteliana, in 1974, in volume 3, pages 3-35

Created: 2017-11-06, modified: 2017-11-06

Authors: Gerhard Schairer

Published in Zitteliana, in 1974, in volume 3, pages 37-124

Created: 2017-11-06, modified: 2017-11-06