W. I. Pierce - Medical - 2000 - 792 pages
This book gives a combined understanding of the Materia Medica and Repertory with comparisons. It also includes the preparation and the details of the proving of different drugs.
Otto Leeser - Medical - 2000 - 987 pages
An in-depth review of the mineral remedies in conformity with scientific chemistry.Known effects of remedies both as poisonings and through provings.