http://book.klll.cc/ebooks/author/50641.opds?sort_order=release_date 2025-11-15T16:34:42Z Books by Black, William Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-15T16:34:42Z https://en.wikipedia.org/wiki/William_Black_(physician) See also: en.wikipedia 2025-11-15T16:34:42Z https://book.klll.cc/ebooks/59846.opds A Comparative View of the Mortality of the Human Species, at All Ages William Black