Janssen, Theodor B.Theodor B.Janssen2022-07-042014-01-282022-07-041953http://nbn-resolving.de/urn:nbn:de:hebis:26-opus-106327https://jlupub.ub.uni-giessen.de/handle/jlupub/2727http://dx.doi.org/10.22029/jlupub-2424deIn Copyrightddc:830