Heide Schatten
Rufus K. Guthrie
Duncan Maskell
Eckehart Kelterborn
Lawrence J. Dyckman
Philip R. Edwards
Scott M. Russell
Unknown Author
Richard K. Gast
E. van Oye
Fritz Kauffmann
Steffen Porwollik
John Edward Cannon
National Library of Medicine (U.S.)
Yashwant Kumar
Julius Leuchs
Danielle A. Brands
Waldemar Loewenthal