http://book.klll.cc/ebooks/subject/31550.opds2025-09-08T04:13:04ZBooks about Rocks -- United States (sorted by popularity)Free eBooks since 1971.Project Gutenberghttps://book.klll.ccwebmaster@gutenberg.orghttps://book.klll.cc/gutenberg/favicon.ico2512025-09-08T04:13:04Zhttps://book.klll.cc/ebooks/55382.opdsField book of common rocks and minerals : for identifying the rocks and minerals of the United States and interpreting their origins and meaningsFrederic Brewster Loomis