http://book.klll.cc/ebooks/subject/4572.opds?sort_order=release_date 2025-11-16T22:44:46Z Books about Riddles, Juvenile Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-16T22:44:46Z https://book.klll.cc/ebooks/47335.opds Food for the Mind: Or, A New Riddle-book John-the-Giant-Killer 2025-11-16T22:44:46Z https://book.klll.cc/ebooks/36571.opds The Book of Riddles Anonymous 2025-11-16T22:44:46Z https://book.klll.cc/ebooks/19716.opds Hundert neue Rätsel (German) Angela Döhring