Studies in Medical History: (a) The Origin of the Herbal. (b) Castor-Oil in Antiquity 2025/02/12 14:48:11 GMT+0 Dawson 1929 W. R. Dawson, Studies in Medical History: (a) The Origin of the Herbal. (b) Castor-Oil in Antiquity, 10, 1929, 49–72 Zotero Link