Template:Ref-Johnson1910
From Embryology
Johnson FP. The development of the mucous membrane of the oesophagus, stomach and small intestine in the human embryo. (1910) Amer. J. Anat., 10: 521-559.
Johnson FP. The development of the mucous membrane of the oesophagus, stomach and small intestine in the human embryo. (1910) Amer. J. Anat., 10: 521-559.