Among the makers of these unusual aircraft were Focke-Wulf, Flettner and Wiener-Naustädter.
- ISBN10 0887402895
- ISBN13 9780887402890
- Publish Date 8 January 1997
- Publish Status Active
- Publish Country US
- Imprint Schiffer Publishing Ltd
- Format Paperback
- Pages 48
- Language English