Laboratory methods of the United States Army / compiled by the Division of Infectious Diseases and Laboratories, Office of the Surgeon-General, Ear Department, Washington, D.C.

Public Domain Mark

You can use this work for any purpose without restriction under copyright law. Read more about this licence.

Credit

Laboratory methods of the United States Army / compiled by the Division of Infectious Diseases and Laboratories, Office of the Surgeon-General, Ear Department, Washington, D.C. Public Domain Mark. Source: Wellcome Collection.