首页 / 官方藏书 / The physiology of digestion considered with relation to the principles of dietetics / CHAPTER III. MASTICATION, INSALIVATION, AND DEGLUTITION.
首页 / 官方藏书 / The physiology of digestion considered with relation to the principles of dietetics / CHAPTER III. MASTICATION, INSALIVATION, AND DEGLUTITION.