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This book was apparently written by Eros Urides, a Martian, and edited by J.L. Kennon. It's a description of how Martians live, which sounds suspiciously like Socialism with a bit of Christianity thrown in for good measure.
This book has 68 pages in the PDF version, and was originally published in 1922.
Production notes: This ebook of The Planet Mars and Its Inhabitants was published by Global Grey in 2018.