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1
Electronic
Archived Material
Archivdatenbank (Archivportal-D)
Archivdatenbank (Kalliope Verbundkatalog)
2
3
11
Electronic
Archived Material
Archivdatenbank (Archivportal-D)
Archivdatenbank (Kalliope Verbundkatalog)
12
14
15
16
17
19
Print
Book
20
Electronic
Review
Presumably Free Access
Volltext (Resolving-System)
Volltext (doi)