1. An aid to materia medica Author(s): Dawbarn, Robert H. M. (Robert Hugh Mackay), 1860-1915, author Publication: New York : J.H. Vail & Co., 1886 Subject(s): PhytotherapyMateria Medica -- administration & dosage
2. An aid to materia medica Author(s): Dawbarn, Robert H. M. (Robert Hugh Mackay), 1860-1915 author Publication: New York : G.P. Putnam's Sons, 1894 Subject(s): PhytotherapyMateria Medica -- administration & dosage
