1. Early development of the urogenital system in the chick;Abdel-Malek;J. Morphol.,1950
2. The effects of neurohypophysial hormones on water and sodium balance in larval and adult bullfrogs (Rana catesbeiana);Alvarado;Comp. Biochem. Physiol.,1966
3. On the origin and history of the urogenital organs of vertebrates;Balfour;J. Anat. Physiol.,1875
4. A Treatise on Comparative Embryology;Balfour,1881
5. On the nature of the organ in adult teleosteans and ganoids, which is usually regarded as the head-kidney or pronephros;Balfour;Quart. J. Micr. Sci.,1882