http://book.klll.cc/ebooks/subject/30767.opds 2025-11-17T17:36:09Z Books about Petroleum -- History Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-17T17:36:09Z https://book.klll.cc/ebooks/53672.opds Sketches in Crude-oil John J. McLaurin