http://book.klll.cc/ebooks/author/31109.opds?sort_order=title 2025-11-18T21:20:20Z Books by Kempe, A. B. (Alfred Bray) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-18T21:20:20Z https://en.wikipedia.org/wiki/Alfred_Kempe See also: en.wikipedia 2025-11-18T21:20:20Z https://book.klll.cc/ebooks/25155.opds How to Draw a Straight Line: A Lecture on Linkages A. B. Kempe