Jahr's New Manual, (or Symptomen-Codex.) Translated, with Extensive Additions ... by C.J. Hempel, Aided by J.M. Quin. With a Preface by C. Hering, Revisions and Clinical Notes by J.F. Gray, Contributions from A.G. Hull, G.W. Cook, R.F. Joslin, C. Hering, J. Jeanes, C. Neidhard, W. Williamson and J. Kitchen. (Complete Repertory of the Homœopathic Materia Medica by C.J. Hempel.). PDF Download