http://book.klll.cc/ebooks/subject/39482.opds 2025-09-19T12:22:16Z Books about Tunnels -- Design and construction (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 2025-09-19T12:22:16Z https://book.klll.cc/ebooks/71675.opds Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 : Experiments on retaining walls and pressures on tunnels Wm. Cain