Template:Ref-Raven1933
From Embryology
Raven RW. Pouches of the pharynx and oesophagus with special reference to the embryological and morphological aspects. (1933) The British Journal of Surgery 21(83): 235-252.
Raven RW. Pouches of the pharynx and oesophagus with special reference to the embryological and morphological aspects. (1933) The British Journal of Surgery 21(83): 235-252.