Home / HISTORICAL WATER POWER ENGINEERING. 318
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- 1917 advertisements.
- Bulletin Number G1.
- ELMER WOODWARD'S NEW TYPE OF OIL PRESSURE WATER WHEEL GOVERNOR GATESHAFT TYPE, CIRCA 1917
- ELMER WOODWARD'S NEW TYPE OF OIL PRESSURE WATER WHEEL GOVERNOR '' GATESHAFT'' TYPE, CIRCA 1912.
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