http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
the third canon of thought; a key to the enigmas of the world
[by] P.D. Ouspensky, tr. from the Russian of Nicholas Bessaraboff and Claude Bragdon--with an introduction by Claude Bragdon.
The Cushing Library/Lit./Mitchell copy contains a pamphlet by Claude Bragdon entitled "The romance and mystery of 'Tertium organum'".