1 Tuloksia löytyi "Tiedosto:A_treatise_on_hydraulics_(IA_cu31924003919267).pdf".

Tiedosto:A treatise on hydraulics (IA cu31924003919267).pdf

used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:A_treatise_on_hydraulics_(IA_cu31924003919267).pdf...