1
2
published 2011
Kostenfrei, Verlag
OnlineResource Website
6
published 2002
Frontdoor-Url
Kostenfrei, Verlag
Electronic Journal
8
9
published 1997
Kostenfrei, Verlag
Frontdoor-Url
Electronic Serial Monograph Series
10
published 1991
Electronic Journal
11
published 1970
Kostenfrei, Verlag
Frontdoor-Url
Electronic Journal