Stanford Encyclopedia of Philosophy
SEP
Stonehenge Today & Yesterday
Frank Stevens
The Last Hour of Life - Gurdjieff, George Ivanovitch
Georges Ivanovich Gurdjieff
The Philosophical Evaluation of Religious Experience
John A. Taber
The History and Philosophy of Wing Chun Kung Fu
Andrew Nerlich
Journeys to the Mythical Past
Zecharia Sitchin
The Earth Chronicles Expeditions