E-Books (193) Books (373) Articles (Online) (7182) OpenAccess-fulltext (7281) more... Thesis (Online) (203) Articles (Print) (747) Thesis (126) Bookchapter (Print) (305) Bookchapter (Online) (469) Audio (DVD/CD) (2) Video (DVD/CD) (8) Journals (Print) (3) Sheet music (2) Audio (Online) (9) Video (Online) (2) less...
german (2667) english (11900) more... spanish (89) latin (65) dutch (10) french (27) italian (4) portuguese (10) swedish (5) russian (2) danish (1) less...