Genre
Electronic books
155
Periodicals
23
Congresses
7
Electronic journals
5
Case studies
4
Conference papers and proceedings
3
Zeitschrift
2
Documentary films
1
Handbooks, manuals, etc
1
History
1
Lehrbuch
1
Nonfiction films
1
Online-Publikation
1
Problems, exercises, etc
1
Study guides
1
Video recordings
1