21. Materia medica of American provings Author(s): American Institute of Homeopathy. Publication: Philadelphia : Rademacher & Sheek, 1853 Subject(s): Materia MedicaHomeopathy -- methodsTherapeutics
22. A guide to homoeopathic practice: designed for the use of families Author(s): Johnson, I. D. (Isaac D.), 1827-1911 Publication: Philadelphia : F.E. Boericke, 1885 Subject(s): Homeopathy -- methodsMateria Medica