http://book.klll.cc/ebooks/subject/35700.opds 2025-08-14T13:18:00Z Books about Lead -- Metallurgy (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 2025-08-14T13:18:00Z https://book.klll.cc/ebooks/63784.opds Lead Smelting and Refining, With Some Notes on Lead Mining 229 downloads