Piasecki H-21: Perbedaan antara revisi
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←Membuat halaman berisi ''''Piasecki H-21 Workhorse/Shawnee''' adalah helikopter Amerika, keempat dari garis tandem rotor helikopter dirancang dan dibangun oleh Piasecki Helicopter (kemudian B...' |
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== Referensi ==
{{Reflist}}
* Duke, R.A., ''Helicopter Operations in Algeria'' [Trans. French], Dept. of the Army (1959).
* Harding, Stephen. ''U.S. Army Aircraft Since 1947''. Shrewsbury, UK:Airlife Publishing, 1990. ISBN 1-85310-102-8.
* United States Air Force Museum (1975 edition)
==Pranala luar==
{{Commons|H-21 Shawnee}}
* [http://www.redstone.army.mil/history/aviation/factsheets/ch21.html H-21 US Army Aviation history fact sheet]
* [http://www.rotors.org/ Owners of an H-21 that still flies.]
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