Helbing, H. (1891). Modern materia medica: For pharmacists, medical men, and students (2nd enl. ed.). The British & Colonial Druggist.
Dyfyniad Arddull ChicagoHelbing, H. Modern Materia Medica: For Pharmacists, Medical Men, and Students. 2nd enl. ed. London: The British & Colonial Druggist, 1891.
Dyfyniad MLAHelbing, H. Modern Materia Medica: For Pharmacists, Medical Men, and Students. 2nd enl. ed. The British & Colonial Druggist, 1891.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.