OPERATION TROJAN HORSE: The Classic Breakthrough Study of UFOs
John A. Keel
Groupoids and Smarandache Groupoids
W. B. Vasantha Kandasamy
Knowledge Graphs and Semantic Web: First Iberoamerican Conference, ...
Boris Villazón-Terrazas & Yusniel Hidalgo-Delgado
Dictionary of Sociology
Tony Lawson & Joan Garrod
Seeking Explanations - Abduction in Logic, Philosophy of Science, ...
Atocha Aliseda-Llera
A Gas Discharge Device for Investigating Focussed Human Attention ...
William A. Tiller
What Are Subtle Energies - Article