Description: Sikorsky Helicopter Related Research Booklet Screw propeller theory 1942 united. He was known as Mr. helicopter to the engineers at United aircraft. This was discarded from their research library. It is complete original, and in acceptable to good condition.
Price: 74.99 USD
Location: Shenandoah, Pennsylvania
End Time: 2025-01-16T16:35:04.000Z
Shipping Cost: N/A USD
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