Fifty years of aerospace medicine; its evolution since the founding of the United States Air Force School of Aerospace Medicine in January 1918.

Includes bibliographies.

Ludendorff's own story, August 1914-November 1918; th great war from the siege of Liege to the signing of the armistice as viewed from the Grand headquarters of the German army,

Mode of access: Internet.

The first world war, 1914-1918; personal experiences of Lieut.-Col. C. à Court Repington.

Mode of access: Internet.

Die pilze und ihre volkswirtschaftliche bedeutung. Vortrag gehalten am. 9. märz 1918 auf der versammlung der Senckenbergischen naturforschenden gesellschaft in Frankfurt a.M.,

Mode of access: Internet.