This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Breymann III. Eisen . Aufl. Titelbild. Breymann III Eisen Aufl Vorderseite Titel This is scan of the book with the title br Allgemeine Baukonstruktionslehre in Bnden Band III Otto Kniger Die Konstruktion in Eisen Auflage Leipzig own scan from original book Otto Kniger PDold PDold Book covers
Page 2023 Free-images.com. All images are Public Domain