Rush, B. (1789). Observations on the duties of a physician and the methods of improving medicine: Accommodated to the present state of society and manners in the United States : delivered in the University of Pennsylvania, February 7, 1789 at the conclusion of a course of lectures upon chemistry and the practice of physic. Philadelphia: Printed and sold by Prichard & Hall.

Rush, Benjamin. Observations On the Duties of a Physician and the Methods of Improving Medicine: Accommodated to the Present State of Society and Manners in the United States : Delivered in the University of Pennsylvania, February 7, 1789 At the Conclusion of a Course of Lectures Upon Chemistry and the Practice of Physic. Philadelphia: Printed and sold by Prichard & Hall, 1789.

Rush, Benjamin. Observations On the Duties of a Physician and the Methods of Improving Medicine: Accommodated to the Present State of Society and Manners in the United States : Delivered in the University of Pennsylvania, February 7, 1789 At the Conclusion of a Course of Lectures Upon Chemistry and the Practice of Physic. Philadelphia: Printed and sold by Prichard & Hall, 1789.