
Gray, Samuel Frederick A Supplement to the Pharmacopoeia: Being a Treatise On Pharmacology in General; Including Not Only the Drugs and Compounds Which Are Used by ... Druggists, and Herbalists ... With a Collect

Gray, Frederick Automatic Mechanism: as Applied in the Construction of Artificial Limbs, in Cases of Amputation

Gray, Samuel Frederick A Supplement to the Pharmacopia, and Treatise on Pharmacology in General: Including not Only the Drugs and Preparations Used by Practitioners of ... Together With a Collection of the Most Usefu

Gray, Samuel Frederick 1766-1828 The Elements of Pharmacy, and of the Chemical History of the Materia Medica: Containing an Explanation of the Chemical Processes of the London ... Chemical Properties of Various Articles Of...