http://www.gutenberg.org/ebooks/subject/24380.opds 2024-11-10T00:06:12Z Books about Fortification -- History (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://www.gutenberg.org webmaster@gutenberg.org https://www.gutenberg.org/gutenberg/favicon.ico 25 1 2024-11-10T00:06:12Z https://sendtokindle.compellingsciencefiction.com/ebooks/41426.opds Annals of a Fortress Eugène-Emmanuel Viollet-le-Duc