Chapter 38: 4. Steam, compressed air, and electricity have been used as the
motive power.
2 words
2 by Sir Edward J. Reed, Reed, Edward J. (Edward James), Sir, 1830-1906, Simpson, Edward, 1824-1888, Kelley, J. D. Jerrold (James Douglas Jerrold), 1847-1922
Chapter 38: 4. Steam, compressed air, and electricity have been used as the