http://book.klll.cc/ebooks/subject/27395.opds 2025-11-16T16:21:00Z Books about Copper Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-16T16:21:00Z https://book.klll.cc/ebooks/47040.opds Chats on Old Copper and Brass Fred. W. Burgess