Friedrich Meinecke
Mike Fillon
Carl Anton Meyer
George Weidman Groff
National Center for Complementary and Alternative Medicine (U.S.)
Juan Hector Hunziker
O. Stapf
Hugh C. Cutler
Mary G. Thoday
Tenghan Tang
P. den Ouden
Erlinda Negre Aragones
Unknown Author
Oliver Atkins Farwell
Adam Gottlieb
Ingeborg Haeckel
United States. General Accounting Office