Lexikon der gesamten Technik

The Lexikon der gesamten Technik is an illustrated German-language encyclopedia of architectural, engineering and manufacturing technology, written by Otto Lueger (German engineer, 1843–1911) and first published in 1894.

Editions

 * 1st Edition, 7 volumes, 1894–1899
 * 2nd Edition, 8 volumes, 1904–1910 (with two supplements in 1914 and 1920)
 * 3rd Edition, 6 volumes, 1926–1929 (with a separate index volume)
 * 4th Edition, 17 volumes, 1960–1972