E-Books (192) Articles (Online) (77768) Books (60) OpenAccess-fulltext (35470) more... Audio (DVD/CD) (3) Articles (Print) (47) Bookchapter (Print) (30) Video (DVD/CD) (3) Thesis (Online) (5) Thesis (2) Bookchapter (Online) (1988) Audio (Online) (23) Video (Online) (11) less...
english (102592) german (214) more... french (37) portuguese (554) spanish (70) danish (2) italian (5) russian (4) dutch (5) swedish (1) less...