[Morphological and physiological studies on the mouth, pharyns and esophagus of the duck].
D000818:Animals; D004372:Ducks / Q000033:anatomy & histology* / Q000502:physiology; D004947:Esophagus / Q000033:anatomy & histology*; D009055:Mouth / Q000033:anatomy & histology*; D010614:Pharynx / Q000033:anatomy & histology*
Morphologisch-physiologische Beobachtungen über den Mund-Pharynx-Osophagus der Ente.