North Texas Skeptics

Secret of the Circles

Crop circles 101

Books for Skeptics

Crop Circles: Exploring the Designs & Mysteries

Secrets in the Fields: The Science and Mysticism of Crop Circles

Crop Circles Revealed: Language of the Light Symbols

Opening Minds: A Journey of Extraordinary Encounters, Crop Circles, and Resonance

The Deepening Complexity of Crop Circles: Scientific Research and Urban Legends

Crop Circles: Signs of Contact

Crop Circles, Gods and Their Secrets: History of Mankind, Written in the Grain

Vital Signs: A Complete Guide to the Crop Circle Mystery and Why It Is Not a Hoax

Crop Circles: Evidence of a Cover-Up (An Orbis Enigma Book)

Crop Circle Cards, The Living Oracle

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