http://book.klll.cc/ebooks/author/45960.opds 2025-08-15T14:49:07Z Books by Hayes, C. W. (Charles Willard) (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 2025-08-15T14:49:07Z https://book.klll.cc/ebooks/50531.opds On Sulphonfluoresceïn and Some of Its Derivatives C. W. Hayes