History of helicopters
1984
192 S.
Ill.
Book
English
DDC: | 629.133/352/09 | |
Local classification TIB: | ver 655 e / tec 25 |
Bristow Helicopters -- An early history
Online Contents | 2003
British International Helicopters - An early history
Online Contents | 1998
Helicopters and aeroplane-helicopters
Engineering Index Backfile | 1921
|Operational history and experience with boeing helicopters
Engineering Index Backfile | 1968
|Online Contents | 2007