http://book.klll.cc/ebooks/bookshelf/249.opds?sort_order=release_date2025-09-22T20:44:57ZBooks in Popular Science Monthly (sorted by release date)Free eBooks since 1971.Project Gutenberghttps://book.klll.ccwebmaster@gutenberg.orghttps://book.klll.cc/gutenberg/favicon.ico2512025-09-22T20:44:57Zhttps://book.klll.cc/ebooks/bookshelf/249.opds?sort_order=authorSort Alphabetically by Author2025-09-22T20:44:57Zhttps://book.klll.cc/ebooks/bookshelf/249.opds?sort_order=titleSort Alphabetically by Title2025-09-22T20:44:57Zhttps://book.klll.cc/ebooks/bookshelf/249.opds?sort_order=downloadsSort by Popularity2025-09-22T20:44:57Zhttps://book.klll.cc/ebooks/43391.opdsAppletons' Popular Science Monthly, December 1898Various2025-09-22T20:44:57Zhttps://book.klll.cc/ebooks/987.opdsThe Scientific Monthly, October to December, 1915Various