http://book.klll.cc/ebooks/author/34189.opds?sort_order=release_date 2025-11-15T22:49:11Z Books by Ribaucour, Albert Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-15T22:49:11Z https://en.wikipedia.org/wiki/Albert_Ribaucour See also: en.wikipedia 2025-11-15T22:49:11Z https://book.klll.cc/ebooks/29805.opds Étude des Élassoïdes, ou, Surfaces A Courbure Moyenne Nulle (French) Albert Ribaucour