An elementary text-book of materia medica
by A. C. Cowperthwaite, National Center for Homoeopathy (U.S.)
HomeopathyMedicinal PlantsVegetable Materia medica
Writing a summary for young readers…
For young readers
Book data: Open Library
by A. C. Cowperthwaite, National Center for Homoeopathy (U.S.)
Book data: Open Library