00678nam0 2200229 450 00001026920180702113825.020080423d1957----km-y0itay50------baengUSa-------001yyRockets, missiles, and space travelby Willy LeyRevised and enlarged editionNew YorkThe Viking press1957XVI, 528 p.ill.22 cm629.4218Ley,Willy331941ITUNIPARTHENOPE20080423RICAUNIMARC000010269629.42/10013221PISTRockets, missiles, and space travel112172UNIPARTHENOPE