http://book.klll.cc/ebooks/subject/13540.opds?sort_order=release_date 2025-08-05T23:20:21Z Books about Physical sciences -- Juvenile literature (sorted by release date) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-08-05T23:20:21Z https://book.klll.cc/ebooks/subject/13540.opds?sort_order=title Sort Alphabetically by Title 2025-08-05T23:20:21Z https://book.klll.cc/ebooks/subject/13540.opds?sort_order=downloads Sort by Popularity 2025-08-05T23:20:21Z https://book.klll.cc/ebooks/58589.opds The Boys' and Girls' Pliny the Elder Pliny 2025-08-05T23:20:21Z https://book.klll.cc/ebooks/58421.opds The Child's Book of Nature Worthington Hooker 2025-08-05T23:20:21Z https://book.klll.cc/ebooks/37589.opds Through Magic Glasses and Other Lectures Arabella B. Buckley 2025-08-05T23:20:21Z https://book.klll.cc/ebooks/17582.opds Round-about Rambles in Lands of Fact and Fancy Frank R. Stockton 2025-08-05T23:20:21Z https://book.klll.cc/ebooks/5726.opds The Fairy-Land of Science Arabella B. Buckley