The Walschaert Locomotive Valve Gear. A Practical Treatise On the Locomotive Valve. Actuating Mechanism Originally Invented by Egide Walschaerts. With the History of its Development by American and European Engine Designers, and its Evolution into the Mechanically Correct Locomotive Valve Gear of the Present Day.
Wood, W.W.
From Barry Cassidy Rare Books, Sacramento, CA, U.S.A.
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