Diels, Hermann. (1920). Antike Technik Sieben Vortrage. Second extended edition.
Verlag B.G. Teubner; Berlin, Germany. Written in German. In very good condition;
covers and pages show signs of wear and yellowing due to age. Hardback covers with reinforced
spine. Discoloration on spine. 243 pp. Illustrations in black and white throughout.