http://book.klll.cc/ebooks/subject/32038.opds 2025-08-12T16:24:22Z Books about Chemical industry (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 2025-08-12T16:24:22Z https://book.klll.cc/ebooks/56330.opds Handbuch der chemischen Technologie (German) Johannes Rudolf Wagner