Worthington high-duty pumping engine (New Catechism of the Steam Engine, 1904).jpg
en
Worthington high duty pumping engine (New Catechism of the Steam Engine, 1904), Steam pumps, Worthington high-duty pumping engine
commons
ja
ワージントン高給水ポンプエンジン
commons_translated
catechism steam-powered arguable input routine steam engine