Symmes's Theory of Concentric Spheres

Full title

Symmes's Theory of Concentric Spheres Demonstrating that the Earth is hollow, habitable within, and widely open about the poles

Language

en

Duration

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Publisher of text edition

Project Gutenberg

Credits

Produced by Chris Curnow, Daniel Lowe and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)

Release date

2017-03-09

Rights

Public domain in the USA.