Home › Articles › Urinary Organs – Chapter 21 – REPERTORY OF HERING’S GUIDING SYMPTOMS OF OUR MATERIA MEDICA By Calvin B. Knerr, M.D. Print ← Back to Articles Article Urinary Organs – Chapter 21 – REPERTORY OF HERING’S GUIDING SYMPTOMS OF OUR MATERIA MEDICA By Calvin B. Knerr, M.D. Main Main