1. El Rhamnus humboldtianus apuntes para su historia natural médica: tésis para el exámen general de medicina, cirugía y obstetricia Author(s): Godoy Álvarez, Manuel, author Publication: México : Oficina Tip. de la Secretaria de Fomento, 1890 Subject(s): RhamnusPhytotherapy
2. The great California wonderland and its products: nature's own remedy Publication: New York : United State Medicine Co., [between 1890 and 1899] Subject(s): Constipation -- drug therapyPhytotherapyRhamnusCalifornia
3. Cascara sagrada, and its use in the treatment of constipation Author(s): Farlow, John Woodford, 1853-1937 author Publication: Boston : Cupples and Hurd, 1887 Subject(s): Constipation -- drug therapyRhamnusPlant Bark
