Template:Ref-O'Connor1940
From Embryology
O'Connor RJ. An experimental study of the development of the amphibian cloaca. (1940) J Anat. 74(3):301 - 308. PMID 17104815
O'Connor RJ. An experimental study of the development of the amphibian cloaca. (1940) J Anat. 74(3):301 - 308. PMID 17104815