http://book.klll.cc/ebooks/subject/30338.opds 2025-08-05T04:42:25Z Books about Petrology (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 2025-08-05T04:42:25Z https://book.klll.cc/ebooks/subject/30338.opds?sort_order=title Sort Alphabetically by Title 2025-08-05T04:42:25Z https://book.klll.cc/ebooks/subject/30338.opds?sort_order=release_date Sort by Release Date 2025-08-05T04:42:25Z https://book.klll.cc/ebooks/52839.opds Texas Rocks and Minerals: An Amateur's Guide Roselle M. Girard 2025-08-05T04:42:25Z https://book.klll.cc/ebooks/66703.opds The Story of a Boulder; or, Gleanings from the Note-book of a Field Geologist Archibald Geikie