| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Piasecki H-21 Helicopter: An Illustrated History of the H-21 Helicopter and Its Designer, Frank N. Piasecki | 978-1-4251-37O7-6 (1-4251-37O7-5) | 2007 | William J. Davies |
J.B. · J Brandt · R. B · R.J. · Robert B. · Robert Brandt · Robert J.