http://www.gutenberg.org/ebooks/subject/19890.opds 2025-01-22T17:05:35Z Books about Geometrical drawing (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 2025-01-22T17:05:35Z https://sendtokindle.compellingsciencefiction.com/ebooks/33202.opds Einführung in die Hauptgesetze der Zeichnerischen Darstellungsmethoden (German) A. Schoenflies