2018-03-132018-03-13Unknownhttp://hdl.handle.net/2152.3/6832A Stethoscope, and Wooden Tube - Wood and Ivory.Dr. William E. ThorntonSpace MedicineStethoscopeIvory stethoscopeWooden Tuberesearchheart soundsCardiac AuscultationStethoscope, Wooden Tube - Wood and Ivory