Books (30) E-Books (23) Articles (Online) (1229) OpenAccess-fulltext (4438) more... Thesis (3) Bookchapter (Print) (7) Articles (Print) (15) Bookchapter (Online) (49) Thesis (Online) (1) Audio (DVD/CD) (1) less...
english (4492) german (68) more... latin (6) french (6) dutch (10) italian (4) russian (43) portuguese (53) spanish (64) danish (1) polish (1) less...