[Reports] / Amer.inst.of aeronautics and astronautics. N 89-2311 : Hydrogen-augmented space boosters : Rep. presented at the AIAA/ASME/SAE/ASEE 25th joint propulsion conf., Monterey(Ca)/July 10-12,1989 / S.K.Roof,D.C.Ferguson,C.E.Merrill и др, 1989. - 7 p. - Текст : непосредственный.