00654nam a2200241 i 4500 C2-0119775 PPAK 20180727112143.0 970806s xxk |||| ||||| | eng d 0870523880 PPAK eng PPAK rda 629.133352 23 629.133352 FAY G Fay, John, author The helicopter : history, piloting and how it flies Newton : David & Charles , xiv, 223 pages ; 22 cm rdacontent text rdamedia unmediated rdacarrier volume Helicopters dc B 33327 33327