http://book.klll.cc/ebooks/subject/30338.opds?sort_order=release_date 2025-08-18T05:50:33Z Books about Petrology (sorted by release date) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-18T05:50:33Z https://book.klll.cc/ebooks/subject/30338.opds?sort_order=title Sort Alphabetically by Title 2025-08-18T05:50:33Z https://book.klll.cc/ebooks/subject/30338.opds?sort_order=downloads Sort by Popularity 2025-08-18T05:50:33Z https://book.klll.cc/ebooks/66703.opds The Story of a Boulder; or, Gleanings from the Note-book of a Field Geologist Archibald Geikie 2025-08-18T05:50:33Z https://book.klll.cc/ebooks/52839.opds Texas Rocks and Minerals: An Amateur's Guide Roselle M. Girard