Electronic reproduction. [S.l.] : HathiTrust Digital Library, 2010.
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212
Mode of access: World Wide Web.
In English, French, and German.
Vols. 45 (1939)-60 (1970) in v. 60.
Description based on print version record.
Latest issue consulted: Band 104, Heft 1 (2014) (De Gruyter Web site, viewed October 28, 2014).