1. An inaugural essay, being a comparative inquiry into the properties and uses of opium: submitted to the examination of the Rev. John Andrews ..., the Trustees and medical professors of the University of Pennsylvania, on the eighth day of June, 1803, for the degree of Doctor of Medicine Author(s): Carter, Robert, d. 1804 Publication: Philadelphia : Printed at the office of the Gazette of the United States, 1803 Subject(s): Opium