http://book.klll.cc/ebooks/subject/30338.opds?sort_order=title 2025-08-06T09:38:47Z Books about Petrology (sorted alphabetically) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-06T09:38:47Z https://book.klll.cc/ebooks/subject/30338.opds?sort_order=release_date Sort by Release Date 2025-08-06T09:38:47Z https://book.klll.cc/ebooks/subject/30338.opds?sort_order=downloads Sort by Popularity 2025-08-06T09:38:47Z https://book.klll.cc/ebooks/66703.opds Story of a Boulder; or, Gleanings from the Note-book of a Field Geologist Archibald Geikie 2025-08-06T09:38:47Z https://book.klll.cc/ebooks/52839.opds Texas Rocks and Minerals: An Amateur's Guide Roselle M. Girard