1. Regulation of volume and concentrations in the body fluids of earthworms;Adolph;J. Exp. Zool.,1927
2. New type of nephridia found in the genus Pheretima;Bahl;Quart. J. Micr. Sci.,1919
3. Blood-vascular system of Pheretima and the course of circulation in earthworms;Bahl;Quart. J. Micr. Sci.,1921
4. Development of the enteronephric type of nephridial system in Pheretima;Bahl;Quart. J. Micr. Sci.,1922
5. Enteronephric type of nephridial system in Lampito;Bahl;Quart. J. Micr. Sci.,1924