[Reports] / Amer.inst.of aeronautics and astronautics. N 88-4460 : YA-7F-A twenty year economic life extension at costs we can afford : Paper presented at AIAA/AHS/ASEE design, systems and operations meet. Sept.7-9, 1988, Atlanta(Ga) / A.R. (Jr)Rudnicki,J.W.Maynor, 1988. - 10 p. - Текст : непосредственный.