title: [THE AIR SACK OF BIRDS. (DEMONSTRATION)].
mesh_terms: D000715:Anatomy; D000818:Animals; D001717:Birds; D001980:Bronchi; D008168:Lung; D012106:Research
keywords: ANATOMY; BIRDS; BRONCHI; EXPERIMENTAL LAB STUDY; LUNG
vernacular_title: DIE LUFTSAECKE DER VOEGEL. (DEMONSTRATION)