http://book.klll.cc/ebooks/subject/5131.opds 2025-08-04T10:39:03Z Books about World War, 1914-1918 -- Secret service -- Fiction (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 2025-08-04T10:39:03Z https://book.klll.cc/ebooks/subject/5131.opds?sort_order=title Sort Alphabetically by Title 2025-08-04T10:39:03Z https://book.klll.cc/ebooks/subject/5131.opds?sort_order=release_date Sort by Release Date 2025-08-04T10:39:03Z https://book.klll.cc/ebooks/41186.opds Sant of the Secret Service: Some Revelations of Spies and Spying William Le Queux 2025-08-04T10:39:03Z https://book.klll.cc/ebooks/2417.opds Okewood of the Secret Service Valentine Williams 2025-08-04T10:39:03Z https://book.klll.cc/ebooks/15302.opds The Man with the Clubfoot Valentine Williams