Bryan, J. (1852). Certainty in medicine, being an introductory lecture delivered before the Philadelphia Medical College, session of 1852-53. Philadelphia: Brown's Steam Power Book and Job Printing Office.

Bryan, James. Certainty in Medicine, Being an Introductory Lecture Delivered Before the Philadelphia Medical College, Session of 1852-53. Philadelphia: Brown's Steam Power Book and Job Printing Office, 1852.

Bryan, James. Certainty in Medicine, Being an Introductory Lecture Delivered Before the Philadelphia Medical College, Session of 1852-53. Philadelphia: Brown's Steam Power Book and Job Printing Office, 1852.