http://book.klll.cc/ebooks/subject/38036.opds 2025-08-14T18:22:48Z Books about Earth (Planet) -- Crust (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-14T18:22:48Z https://book.klll.cc/ebooks/68690.opds The Vailan or annular theory: A synopsis of Prof. I. N. Vail's argument in support of the claim that this Earth once possessed a Saturn-like system of rings Stephen Bowers