Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Machineries of empire ; 2 1 Machineries of empire ; 3 1 Machineries of empire ; book three 1 Machineries of empire ; book two 1 Machines and motion 6 SEE: Bullfrog Books. Machines and motion. 1 Machines at work 17 SEE: Bullfrog books. Machines at work. 5 SEE: Pluckrose, Henry Arthur. Machines at work 5 Machines at work (Mankato, Minn.) 1 Machines close-up 4 Machines inside out. 4 Machines of the future 2 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >