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.
English and German.
Description based on: Jahrg. 1, Heft 1 (1979); title from PDF table of contents (PAO, viewed Oct. 11, 2012).