Medulla

Bu kavram başka kaynaklarda da geçiyor

• Stedman's Medical Dictionary: A Practical Medical Dictionary (1920)
• The American Illustrated Medical Dictionary (1913)
• The American Dictionary and Cyclopedia (1910)
• Chamber's Twientieth Century Dictionary (1908)
• An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
• The Student's Medical Dictionary (1896)
• Zell's Condensed Dictionary