title: [Contribution to the microscopic anatomy of the copulation organ of the Anatidae].
mesh_terms: D000818:Animals; D002988:Cloaca / Q000033:anatomy & histology*; D004372:Ducks / Q000033:anatomy & histology*; D004848:Epithelium / Q000033:anatomy & histology; D005777:Geese / Q000033:anatomy & histology*; D006652:Histological Techniques; D008297:Male; D009092:Mucous Membrane / Q000033:anatomy & histology; D010413:Penis / Q000033:anatomy & histology*
vernacular_title: Beitrag zur mikroskopischen Anatomie des Kopulationsorganes der Entenvögel.