The Gnostics - Myth, Ritual, and Diversity in Early Christianity
David Brakke
Encyclopedia of Early Christianity, Second Edition
Everett Ferguson
A Study of History - Volume 11 - Historical Atlas and Gazetteer
Arnold J. Toynbee & Edward D. Myers
Riemann-Finsler Geometry
Shiing-Shen Chern & Zhongmin Shen
The Pseudoscience Wars
Michael D. Gordin
Encyclopedia of Astrology
Nicholas Devore