Thực đơn
Piasecki H-21 Tham khảoThực đơn
Piasecki H-21 Tham khảoLiên quan
Piasecki H-21 Piasecki HRP Rescuer Piasecki X-49 Piasecki HUP Retriever Piasecki H-16 Transporter Piasecki PV-2Tài liệu tham khảo
WikiPedia: Piasecki H-21 http://www.rcaf-arc.forces.gc.ca/v2/equip/hst/21b-... http://www.helis.com/database/model/13/?org=235 http://www.helis.com/database/model/790/ http://www.helis.com/database/modelorg/1437/ http://www.helis.com/database/modelorg/150/ http://www.helis.com/database/modelorg/151/ http://www.helis.com/database/modelorg/649/ http://www.helis.com/database/org/us_new_york_airw... http://photovalet.com/256048/print http://www.redstone.army.mil/history/aviation/fact...