621 G79

Grannis, Gary E.

USA,The Bobbs Merrill,1979

28.5 cm.

1. Early forms of power. 2. Water power. 3. Air power. 4. Steam power. 5. Electrical power. 6. Internal combustion power. 7. Continuous combustion power. 8. The mechanic's tools and materials. 9. Maintaining and troubleshooting. 10. Transmitting power. 11. Nuclear power.

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