http://book.klll.cc/ebooks/subject/29271.opds 2025-11-15T01:05:54Z Books about Geology -- Texas -- Palo Duro Canyon Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-15T01:05:54Z https://book.klll.cc/ebooks/50487.opds Guidebook of Palo Duro Canyon West Texas State University. Geological Society