http://book.klll.cc/ebooks/subject/24885.opds?sort_order=release_date 2025-08-29T04:52:45Z Books about Slide-rule (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 2025-08-29T04:52:45Z https://book.klll.cc/ebooks/subject/24885.opds?sort_order=title Sort Alphabetically by Title 2025-08-29T04:52:45Z https://book.klll.cc/ebooks/subject/24885.opds?sort_order=downloads Sort by Popularity 2025-08-29T04:52:45Z https://book.klll.cc/ebooks/75904.opds The slide rule : a practical manual Charles N. Pickworth 2025-08-29T04:52:45Z https://book.klll.cc/ebooks/42216.opds On the History of Gunter's Scale and the Slide Rule During the Seventeenth Century Florian Cajori