Piper Aircraft: Forskelle mellem versioner

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Add 2 books for Wikipedia:Verificerbarhed (20210221)) #IABot (v2.0.8) (GreenC bot
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* {{cite book |title=The International Directory of Civil Aircraft , 1997/98 |first=Gerard |last=Frawley |year=1997 |publisher=Aerospace Publications |location=Fyshwick, ACT |isbn=1 875671 26 9 }}
* {{cite journal |last1=Gilbert |first1=James |date=september 1965 |title=Mr. Piper's Cub |journal=Flying |volume=77 |issue=3 |pages=30–35 |publisher=Ziff-Davis Publishing Company }}
* {{cite book |title=NASA Technical Memorandum 80102: Comparative Analysis of PA-31-350 Chieftain (N44LV) Accident and NASA Crash Test Data |last=Hayduck |first=Robert J. |authorlink= |year= |publisher=NASA Langley Research Center |location=Hampton, Virginia |accessdate=3130. april 2015 |url=http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790025001_1979025001.pdf}}
* Lambert, Mark and Pugh, Alastair. "The Pied Pipers: In the Air with the Colourful Comanche, Tri-Pacer and Super Cub", ''Flight'' (Iliffe and Sons), Vol. 76, No. 2644, 13 November 1959, pp. 550–552
* {{cite book |title=The Complete Illustrated Encyclopaedia of the World's Aircraft |editor1-first=David |editor1-last=Mondey |year=1978 |publisher=New Burlington Books |location=London |isbn=0 906286 39 5 }}