Chambers Dictionary of Quotations
Don Currie & Una McGovern
Advances in Temporal Logic
Dov M. Gabbay & Howard Barringer & Michael Fisher & Graham Gough
Gurdjieff Zitate über Lernen Verstehen by Gurdjieff, G.I.
Georges Ivanovich Gurdjieff
The Oxford Dictionary of Family Names in Britain and Ireland
Patrick Hanks & Richard Coates & Peter McClure (historian)
Hegel: Three Studies
Theodor W. Adorno
Ken Wilber - Filasofia Transpersonal
Ángel Rguez